Knowledge Base

The Knowledge Base provides access to information about the environmental effects of marine and wind energy, supporting OES-Environmental and WREN initiatives. Relevant documents and OES-Environmental metadata forms are compiled into a user-friendly table with advanced filtering. Filters may be selected on the right, or keywords entered in the Search Text box. Content may also be sorted alphabetically by clicking on column headers.


As an alternative to the Knowledge Base, check out the Map Viewer to access geotagged content in a spatial view.


Title Author* Date** Type of Content Technology Types Stressorssort descending Receptors
Three-dimensional mapping of the benthic invertebrates biophony with a compact four-hydrophones array Gervaise, C., et al. May 2019 Journal Article Marine Energy (General), Wind Energy (General), Offshore Wind Attraction Invertebrates
Benthic Conservation Features and Species Associated With Subsea Pipelines: Considerations for Decommissioning Rouse, S., et al. April 2019 Journal Article Wind Energy (General), Offshore Wind Attraction Invertebrates, Human Dimensions, Legal & Policy
Marine Renewable Energy Converters and Biofouling: A Review on Impacts and Prevention Titah-Benbouzid, H., Benbouzid, M. September 2015 Conference Paper Marine Energy (General), Wind Energy (General), Offshore Wind Attraction Invertebrates
Succession and Seasonal Dynamics of the Epifauna Community on Offshore Wind Farm Foundations and their Role as Stepping Stones for Non-Indigenous Species De Mesel, I., et al. September 2015 Journal Article Wind Energy (General), Offshore Wind Attraction Invertebrates
Rapid increase of benthic structural and functional diversity at the alpha ventus offshore test site Gutow, L., et al. January 2014 Book Chapter Wind Energy (General), Offshore Wind Attraction Invertebrates
Functional and structural responses to marine urbanisation Mayer-Pinto, M., et al. January 2018 Journal Article Marine Energy (General), Wind Energy (General), Offshore Wind Attraction, Avoidance Invertebrates
Effect of an Offshore Wind Farm on the Viviparous Eelpout: Biometrics, Brood Development and Population Studies in Lillgrund, Sweden Langhamer, O., Dahlgren, T., Rosenqvist, G. January 2018 Journal Article Wind Energy (General), Offshore Wind Attraction, Avoidance Fish
Environmental Risk Evaluation System - An Approach to Ranking Risk of Ocean Energy Development on Coastal and Estuarine Environments Copping, A., et al. January 2015 Journal Article Marine Energy (General), Tidal, Wave, Wind Energy (General), Offshore Wind Attraction, Avoidance, Changes in Flow, Chemicals, Collision, Displacement, Habitat Change Birds, Fish, Marine Mammals
Interactions with Offshore Wind Energy: Birds and Bats Island Institute January 2012 Presentation Wind Energy (General), Offshore Wind Attraction, Avoidance, Changes in Flow, Collision, Habitat Change Bats, Birds, Seabirds
Bats and Offshore Wind Turbines Studied in Southern Scandinavia Ahlén, I., et al. July 2007 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision Bats
Does the Wind Power Industry Threaten Marbled Murrelets or Do Marbled Murrelets Threaten the Wind Power Industry? Cooper, J., Beauchesne, S. March 2004 Conference Paper Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision Birds, Seabirds
Evaluating the Effectiveness of an Ultrasonic Acoustic Deterrent for Reducing Bat Fatalities at Wind Turbines Arnett, E., et al. June 2013 Journal Article Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision Bats
Avoidance Behaviour of Birds around Offshore Wind Farms: Overview of Knowledge Including Effects of Configuration Krijgsveld, K. July 2014 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds
The Avoidance Rates of Collision Between Birds and Offshore Turbines Cook, A., et al. December 2014 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds, Seabirds
Bird and Bat Collision Risks & Wind Energy Facilities Willmott, J., et al. December 2012 Report Wind Energy (General), Land-Based Wind, Offshore Wind Attraction, Avoidance, Collision, Displacement Bats, Birds
Bird Migration Studies and Potential Collision Risk with Offshore Wind Turbines Hüppop, O., et al. March 2006 Journal Article Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds, Passerines
Bird Monitoring at Offshore Wind Farms in the Belgian Part of the North Sea - Assessing Seabird Displacement Effects Vanermen, N., et al. January 2013 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds, Seabirds
Burbo Bank Extension Offshore Wind Farm Volume 2: ES Biological Environment DONG Energy March 2013 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds, Fish, Marine Mammals
Collision and Displacement Vulnerability Among Marine Birds of the California Current System Associated with Offshore Wind Energy Infrastructure Adams, J., et al. October 2016 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds, Seabirds
Collision and displacement vulnerability to offshore wind energy infrastructure among marine birds of the Pacific Outer Continental Shelf Kelsey, E., et al. September 2018 Journal Article Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds
Collision, Displacement and Barrier Effect Concept Note Humphreys, E., Cook, S., Burton, N. January 2015 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds, Human Dimensions, Environmental Impact Assessment
Effects of offshore wind farms on birds: "Cuisinarts of the sky" or just tilting at windmills? Tingley, M. March 2003 Thesis Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds, Passerines, Seabirds
Investigations of the Bird Collision Risk and the Responses of Harbour Porpoises in the Offshore Wind Farms Horns Rev, North Sea, and Nysted, Baltic Sea, in Denmark - Part I: Birds Blew, J., et al. January 2008 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds
Mapping Seabird Sensitivity to Offshore Wind Farms Bradbury, G., et al. September 2014 Journal Article Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement Birds
Effects on Birds of an Offshore Wind Park at Horns Rev: Environmental Impact Assessment Noer, H., et al. January 2000 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement, Habitat Change Birds, Raptors, Seabirds, Waterfowl, Human Dimensions, Environmental Impact Assessment
Future Directions in Conservation Research on Petrels and Shearwaters Rodríguez, A., et al. March 2019 Journal Article Wind Energy (General), Land-Based Wind, Offshore Wind Attraction, Avoidance, Collision, Displacement, Habitat Change Birds, Seabirds
Impacts to Wildlife of Wind Energy Siting and Operation in the United States Allison, T., et al. September 2019 Report Wind Energy (General), Land-Based Wind, Offshore Wind Attraction, Avoidance, Collision, Displacement, Habitat Change Bats, Birds
Information Needs to Support Environmental Impact Assessments of the Effects of European Marine Offshore Wind Farms on Birds Fox, A., et al. March 2006 Journal Article Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement, Habitat Change Birds, Seabirds, Human Dimensions, Environmental Impact Assessment
Assessing Environmental Impacts of Offshore Wind Farms: Lessons Learned and Recommendations for the Future Bailey, H., Brookes, K., Thompson, P. September 2014 Journal Article Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement, Noise Birds, Ecosystem Processes, Marine Mammals
Investigations of the Bird Collision Risk and the Responses of Harbour Porpoises in the Offshore Wind Farms Horns Rev, North Sea, and Nysted, Baltic Sea, in Denmark - Part II: Harbour porpoises Diederichs,A., Hennig, V., Nehls, G. January 2008 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, Collision, Displacement, Noise Birds, Marine Mammals
Seabird Avoidance and Attraction at an Offshore Wind Farm in the Belgian Part of the North Sea Vanermen, N., et al. September 2015 Journal Article Wind Energy (General), Offshore Wind Attraction, Avoidance, Displacement Birds, Seabirds
Potential Impact of Submarine Power Cables on Crab Harvest Bull, A., Nishimoto, M. February 2016 Conference Paper Marine Energy (General), Wind Energy (General), Offshore Wind Attraction, Avoidance, EMF Invertebrates
Effects of Marine Windfarms on the Distribution of Fish, Shellfish and Marine Mammals in the Horns Rev Area Hoffmann, E., et al. May 2000 Report Wind Energy (General), Offshore Wind Attraction, Avoidance, EMF, Habitat Change, Noise Fish, Invertebrates, Marine Mammals, Pinnipeds
Seabirds and Offshore Wind Farms in European Waters: Avoidance and Attraction Dierschke, V., Furness, R., Garthe, S. October 2016 Journal Article Wind Energy (General), Offshore Wind Attraction, Avoidance, Habitat Change Birds, Seabirds
Pilot field study: observations from a fixed platform on occurrence and behaviour of common guillemots and other seabirds in offshore wind farm Luchterduinen Leopold, M., Verdaat, H. September 2018 Report Wind Energy (General), Offshore Wind Attraction, Collision Birds, Seabirds
Flight Call Rates of Migrating Thrushes: Effects of Wind Conditions, Humidity and Time of Day at an Illuminated Offshore Platform Hüppop, O., Hilgerloh, G. January 2012 Journal Article Wind Energy (General), Offshore Wind Attraction, Collision Birds, Passerines
Oil and gas platforms as artificial substrates for epibenthic North Sea fauna: Effects of location and depth Schutter, M., et al. November 2019 Journal Article Wind Energy (General), Offshore Wind Attraction, Habitat Change Fish, Invertebrates
Oceanographic and biological influences on recruitment of benthic invertebrates to hard substrata on the Oregon shelf Meyer, K., Li, Y., Young, C. August 2018 Journal Article Marine Energy (General), Wind Energy (General), Offshore Wind Attraction, Habitat Change Invertebrates
Anthropogenic disturbance facilitates a non-native species on offshore oil platforms Viola, S., et al. July 2018 Journal Article Marine Energy (General), Wind Energy (General), Offshore Wind Attraction, Habitat Change Invertebrates
Patterns of migrating soaring migrants indicate attraction to marine wind farms Skov, H., et al. December 2016 Journal Article Wind Energy (General), Offshore Wind Attraction, Habitat Change Birds, Raptors
Harbour Porpoises (Phocoena phocoena) and Wind Farms: A Case Study in the Dutch North Sea Scheidat, M., et al. June 2011 Journal Article Wind Energy (General), Offshore Wind Attraction, Habitat Change Marine Mammals
Colonization of an Artificial Hard Substrate by Mytilus edulis in the German Bight Joschko, T., et al. October 2008 Journal Article Marine Energy (General), Wind Energy (General), Offshore Wind Attraction, Habitat Change Invertebrates
Connectivity of larval stages of sedentary marine communities between hard substrates and offshore structures in the North Sea van der Molen, J., et al. October 2018 Journal Article Marine Energy (General), Wind Energy (General), Offshore Wind Attraction, Habitat Change Ecosystem Processes
The Co-Location of Offshore Windfarms and Decapod Fisheries in the UK: Constraints and Opportunities Hooper, T., Austen, M. January 2014 Journal Article Wind Energy (General), Offshore Wind Attraction, Habitat Change Invertebrates, Human Dimensions, Fisheries
Offshore Wind Farms as Productive Sites or Ecological Traps for Gadoid Fishes? - Impact on Growth, Condition Index and Diet Composition Reubens, J., et al. September 2013 Journal Article Wind Energy (General), Offshore Wind Attraction, Habitat Change Fish
Aggregation and Feeding Behaviour of Pouting (Trisopterus luscus) at Wind Turbines in the Belgian Part of the North Sea Reubens, J., Degraer, S., Vincx, M. February 2011 Journal Article Wind Energy (General), Offshore Wind Attraction, Habitat Change Fish
Review of the Reef Effects of Offshore Wind Farm Structures and their Potential for Enhancement and Mitigation UK Department for Business Enterprise and Regulatory Reform January 2008 Report Wind Energy (General), Offshore Wind Attraction, Habitat Change Fish, Invertebrates, Human Dimensions, Social & Economic Data
Feasibility of Sensor Development for Monitoring Marine Growth Yunnie, A., Vance, T., Ramsden, R. April 2016 Report Marine Energy (General), Wind Energy (General), Offshore Wind Attraction, Habitat Change Invertebrates
Feasibility of Predictive Mapping of Marine Growth Miller, R., Macleod, A. August 2015 Report Marine Energy (General), Wind Energy (General), Offshore Wind Attraction, Habitat Change Invertebrates
Attraction of nocturnally migrating birds to artificial light: The influence of colour, intensity and blinking mode under different cloud cover conditions Rebke, M., et al. May 2019 Journal Article Wind Energy (General), Offshore Wind Attraction, Lighting Birds
Green Light For Nocturnally Migrating Birds Poot, H., et al. January 2008 Journal Article Wind Energy (General), Offshore Wind Attraction, Lighting Birds
The use of Acoustic Deterrents for the mitigation of injury to marine mammals during pile driving for offshore wind farm construction Sparling, C., et al. October 2015 Report Wind Energy (General), Offshore Wind Attraction, Noise Marine Mammals
Use of Deterrent Devices and Improvements to Standard Mitigation during Piling Herschel, A., et al. October 2013 Report Wind Energy (General), Offshore Wind Attraction, Noise Marine Mammals
Use of Deterrent Devices and Improvements to Standard Mitigation during Piling - Research Summary Herschel, A., et al. November 2013 Report Wind Energy (General), Offshore Wind Attraction, Noise Marine Mammals
Joint Statutory Nature Conservation Bodies Position Statement: ORJIP Project 4, Stage 1 of Phase 2 Statutory Nature Conservation Bodies (SNCB) October 2016 Report Wind Energy (General), Offshore Wind Attraction, Noise Marine Mammals
Seabirds as samplers of the marine environment - a case study of northern gannets Garthe, S., et al. April 2017 Journal Article Wind Energy (General), Offshore Wind Avoidance Birds, Seabirds
Baseline Studies North Sea Wind Farms: Fluxes, Flight Paths and Altitudes of Flying Birds 2003-2004 Krijgsveld, K., et al. October 2005 Report Wind Energy (General), Offshore Wind Avoidance Birds
Best Practice Guidance for the Use of Remote Techniques for Observing Bird Behaviour in Relation to Offshore Wind Farms Desholm, M., Fox, A., Beasley, P. January 2004 Report Wind Energy (General), Offshore Wind Avoidance Birds, Seabirds, Shorebirds
Assessing Northern Gannet Avoidance of Offshore Windfarms Rehfisch, M., et al. June 2014 Report Wind Energy (General), Offshore Wind Avoidance Birds, Seabirds
Barriers to Movement: Modelling Energetic Costs of Avoiding Marine Wind Farms Amongst Breeding Seabirds Masden, E., et al. July 2010 Journal Article Wind Energy (General), Offshore Wind Avoidance Birds, Seabirds
Horns Rev II Offshore Wind Farm Monitoring of Bird Migration Skov, H., et al. May 2009 Report Wind Energy (General), Offshore Wind Avoidance Birds
Base-Line Investigations of Birds in Relation to an Offshore Wind Farm at Rødsand: Results and Conclusions, 2002 Desholm, M., et al. September 2003 Report Wind Energy (General), Offshore Wind Avoidance Birds
A Review of Methods to Monitor Collisions or Micro-Avoidance of Birds with Offshore Wind Turbines - Part 1: Review Strategic Ornithological Support Services Project Collier, M., Dirksen, S., Krijgsveld, K. September 2011 Report Wind Energy (General), Offshore Wind Avoidance, Collision Birds
Preliminary Investigations of Bird-Turbine Collisions at Nysted Offshore Wind Farm and Final Quality Control of Thermal Animal Detection System (TADS) Desholm, M. January 2005 Report Wind Energy (General), Offshore Wind Avoidance, Collision Birds, Seabirds, Waterfowl
ORJIP Bird Collision and Avoidance Study Skov, H., et al. April 2018 Report Wind Energy (General), Offshore Wind Avoidance, Collision Birds, Seabirds
Predicting the impacts of wind farms on seabirds: An individual-based model Warwick-Evans, V., et al. March 2018 Journal Article Wind Energy (General), Offshore Wind Avoidance, Collision Birds, Seabirds
A Review of Methods to Monitor Collisions or Micro-Avoidance of Birds with Offshore Wind Turbines - Part 2: Feasibility Study of Systems to Monitor Collisions Collier, M., Dirksen, S., Krijgsveld, K. February 2012 Report Wind Energy (General), Offshore Wind Avoidance, Collision Birds
Strategic Joint Industry Project No.1: Bird avoidance behavior and collision impact monitoring at Offshore Windfarms Marine Scotland, et al. December 2012 Report Wind Energy (General), Offshore Wind Avoidance, Collision Birds
Radar Monitoring of Migrating Pink-Footed Geese: Behavioural Responses to Offshore Wind Farm Development Plonczkier, P., Simms, I. August 2012 Journal Article Wind Energy (General), Offshore Wind Avoidance, Collision Birds
Assessing the Impact of Marine Wind Farms on Birds through Movement Modelling Masden, E., et al. May 2012 Journal Article Wind Energy (General), Offshore Wind Avoidance, Collision Birds
A Review of Flight Heights and Avoidance Rates of Birds in Relation to Offshore Wind Farms Cook, A., et al. May 2012 Report Wind Energy (General), Offshore Wind Avoidance, Collision Birds
Avian Collision Risk at an Offshore Wind Farm Desholm, M., Kahlert, J. June 2005 Journal Article Wind Energy (General), Offshore Wind Avoidance, Collision Birds, Waterfowl
Bird Movements at Rotor Heights Measured Continuously with Vertical Radar at a Dutch Offshore Wind Farm Fijn, R., et al. July 2015 Journal Article Wind Energy (General), Offshore Wind Avoidance, Collision Birds, Passerines, Seabirds
Developing an Avian Collision Risk Model to Incorporate Variability and Uncertainty Masden, E. September 2015 Report Wind Energy (General), Offshore Wind Avoidance, Collision Birds
Dodging the blades: new insights into three-dimensional space use of offshore wind farms by lesser black-backed gulls Larus fuscus Thaxter, C., et al. January 2018 Journal Article Wind Energy (General), Offshore Wind Avoidance, Collision Birds, Seabirds
Influence of Behavior on Bird Mortality in Wind Energy Developments Smallwood, K., Rugge, L., Morrison, M. September 2009 Journal Article Wind Energy (General), Offshore Wind Avoidance, Collision, Displacement Birds, Passerines, Raptors, Waterfowl
Collision Mortalities at Horseshoe Shoal of Bird Species of Special Concern Hatch, J., Brault, S. January 2007 Report Wind Energy (General), Offshore Wind Avoidance, Collision, Displacement Birds, Seabirds, Shorebirds, Waterfowl
Contextualizing Avian Mortality: A Preliminary Appraisal of Bird and Bat Fatalities from Wind, Fossil-Fuel, and Nuclear Electricity Sovacool, B. June 2009 Journal Article Wind Energy (General), Offshore Wind Avoidance, Collision, Displacement Bats, Birds
Cumulative Effects of Wind Farms in the Dutch North Sea on Bird Populations Poot, M., et al. June 2012 Conference Paper Wind Energy (General), Offshore Wind Avoidance, Collision, Displacement Birds
Developing Guidance on Ornithological Cumulative Impact Assessment for Offshore Wind Farm Developers King, S., et al. June 2009 Report Wind Energy (General), Offshore Wind Avoidance, Collision, Displacement Birds
Final Results of Bird Studies at the Offshore Wind Farms at Nysted and Horns Rev, Denmark Petersen, I., et al. January 2006 Report Wind Energy (General), Offshore Wind Avoidance, Collision, Displacement, Habitat Change Birds, Seabirds
The consequences of seabird habitat loss from offshore wind turbines, version 2 van Kooten, T., et al. July 2019 Report Wind Energy (General), Offshore Wind Avoidance, Collision, Displacement, Habitat Change Birds, Seabirds
Horns Rev 2 Offshore Wind Farm Bird Monitoring Program 2010-2012 Skov, H., et al. December 2012 Report Wind Energy (General), Offshore Wind Avoidance, Collision, Habitat Change Birds
Vulnerability of Scottish Seabirds to Offshore Wind Turbines Furness, B., Wade, H. February 2012 Report Wind Energy (General), Offshore Wind Avoidance, Collision, Habitat Change Birds, Raptors, Seabirds, Waterfowl
Assessment of the Effects of Offshore Wind in Birds Percival, S. January 2001 Report Wind Energy (General), Offshore Wind Avoidance, Collision, Habitat Change Birds, Seabirds, Waterfowl
Unforeseen Responses of a Breeding Seabird to the Construction of an Offshore Wind Farm Harwood, A., et al. February 2017 Book Chapter Wind Energy (General), Offshore Wind Avoidance, Habitat Change Birds, Seabirds
Soaring Migratory Birds Avoid Wind Farm in the Isthmus of Tehuantepec, Southern Mexico Villegas-Patraca, R., Cabrera-Cruz, S., Herrera-Alsina, L. March 2014 Journal Article Wind Energy (General), Offshore Wind Avoidance, Habitat Change Birds
Wind Energy's Subtle Effect - Habitat Fragmentation Pruett, J. May 2013 Presentation Wind Energy (General), Offshore Wind Avoidance, Habitat Change Bats, Birds
Use of High Resolution Sonar for Near-Turbine Fish Observations (DIDSON) - WeSea 2007-002 Couperus, B., et al. November 2010 Report Wind Energy (General), Offshore Wind Avoidance, Habitat Change Fish
Investigations of Birds During Construction and Operation of Nysted Offshore Wind Farm at Rødsand Kahlert, J., et al. January 2004 Report Wind Energy (General), Offshore Wind Avoidance, Habitat Change Birds
Impact of pile-driving on Hector's dolphin in Lyttelton Harbour, New Zealand Leunissen, E., Rayment, W., Dawson, S. May 2019 Journal Article Marine Energy (General), Wind Energy (General), Offshore Wind Avoidance, Noise Marine Mammals, Cetaceans
Predicting the impacts of anthropogenic disturbances on marine populations Nabe-Nielsen, J., et al. September 2018 Journal Article Wind Energy (General), Offshore Wind Avoidance, Noise Marine Mammals
Disturbance of harbour porpoises during construction of the first seven offshore wind farms in Germany Brandt, M., et al. May 2018 Journal Article Wind Energy (General), Offshore Wind Avoidance, Noise Marine Mammals
Responses of bottlenose dolphins and harbor porpoises to impact and vibration piling noise during harbor construction Graham, I., et al. May 2017 Journal Article Marine Energy (General), Wind Energy (General), Offshore Wind Avoidance, Noise Marine Mammals, Cetaceans
Marine Protected Areas and Offshore Wind Farms Sanders, N., Haynes, T., Goriup, P. March 2017 Book Chapter Wind Energy (General), Offshore Wind Avoidance, Noise Marine Mammals
Avoidance of Wind Farms by Harbour Seals is Limited to Pile Driving Activities Russell, D., et al. May 2016 Journal Article Wind Energy (General), Offshore Wind Avoidance, Noise Marine Mammals, Pinnipeds
Marine mammals and windfarms: Effects of alpha ventus on harbour porpoises Dähne, M., et al. January 2014 Book Chapter Wind Energy (General), Offshore Wind Avoidance, Noise Marine Mammals
Underwater construction and operational noise at alpha ventus Betke, K. January 2014 Book Chapter Wind Energy (General), Offshore Wind Avoidance, Noise Marine Mammals
Effects of Pile-Driving Noise on the Behaviour of Marine Fish Mueller-Blenkle, C., et al. March 2010 Report Wind Energy (General), Offshore Wind Avoidance, Noise Fish
Seabed morphodynamics due to offshore wind farms van der Veen, H., Hulscher, S., Lapeña, B. July 2019 Book Chapter Wind Energy (General), Offshore Wind Changes in Flow Physical Environment

Pages

Find Tethys on InstagramFind Tethys on FacebookFind Tethys on Twitter
 
CAPTCHA
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.