{"id":45429,"date":"2026-11-09T13:55:18","date_gmt":"2026-11-09T18:55:18","guid":{"rendered":"https:\/\/www.ecoportal.net\/en\/?p=45429"},"modified":"2026-11-09T13:55:18","modified_gmt":"2026-11-09T18:55:18","slug":"edge-turbines-higher-bat-fatalities","status":"publish","type":"post","link":"https:\/\/www.ecoportal.net\/en\/edge-turbines-higher-bat-fatalities\/45429\/","title":{"rendered":"Scientists tracked bat deaths at 19 Iowa wind farms and found higher estimated fatalities at turbines along the outer edges"},"content":{"rendered":"

Bat deaths have proven to be the most significant challenge associated with wind energy for wildlife.<\/p>\n

Over two years, bat fatalities were examined at nineteen (19) wind farms across Iowa. A clear pattern soon emerged.<\/span><\/p>\n

The highest fatality estimates were not spread evenly<\/strong> across the sites.<\/p>\n

Instead, certain turbines stood out from the rest. Understanding why became the next challenge.<\/p>\n

The pattern was becoming too consistent to ignore<\/h2>\n

Bats provide additional services such as maintaining insect populations under control, contributing to healthy ecosystems.<\/p>\n

As many species of bats continue to lose their habitat, disease continues to plague them.<\/p>\n

Environmental change also creates challenges for them. Most of those threats occur far from wind facilities.<\/p>\n

Wind turbines are different in that they can create direct mortality to bats<\/strong>.<\/p>\n

Fatal collisions between turbines and bats have been documented for over twenty years.<\/p>\n

The challenge remains finding why some turbines appear riskier than others.<\/p>\n

Answers only emerged after the focus shifted<\/h3>\n

Another perspective emerged when the data were examined more closely.<\/p>\n

They then examined individual turbines rather than the wind farm as a whole.<\/p>\n

Researchers collected bat carcasses during routine searches around the base of each turbine over two years. In short order, a clear trend emerged.<\/p>\n

Fatality rates were consistently higher at edge turbines compared with those that were farther in the same wind facility.<\/p>\n

This finding clearly indicated that location or placement was also very influential<\/strong>.<\/p>\n

\"\"<\/p>\n

 <\/p>\n

Then the landscape itself became part of the story<\/h2>\n

Where a turbine was placed appeared to matter.<\/p>\n

Locations near forests often showed different patterns of bat fatality estimates. So did locations near rivers and wetlands.<\/p>\n

The biggest differences were observed where bats preferred to hunt or roost<\/a>.<\/p>\n

Those preferences created “hot spots” based on landscape features. Unfortunately, many of those hot spots overlapped with turbine locations.<\/p>\n

That pattern revealed an important clue. However, it did not explain everything<\/strong>.<\/p>\n

A second level was added beyond just where bats died<\/h3>\n

According to Ecological Informatics<\/em><\/a>, the data suggested another layer to the story.<\/p>\n

Many different bat species had lower fatality rates when there were lower wind speeds and warmer temperatures during nighttime hours.<\/p>\n

However, not all species are affected in the same way by the above-mentioned conditions.<\/p>\n

The characteristics of certain species relate much more closely to their preferred habitat. Other species are more directly related to weather and environmental conditions.<\/p>\n

There is no single condition that can explain<\/strong> all observations regarding how bats die.<\/p>\n

Risk may begin before the blades ever move<\/h2>\n

Findings suggest risk begins long before construction starts on a new turbine.<\/p>\n

Both habitat data and facility design can help identify potential high-risk locations<\/a>.<\/p>\n

Even among turbines in the same wind farm, collision risks can vary dramatically. That provides opportunities early in the planning process.<\/p>\n

Not every edge turbine carries the same level of risk. Even so, the findings show that placement decisions matter<\/strong>.<\/p>\n

Choices made on a map today will ultimately impact outcomes before blades start turning.<\/p>\n

Reducing risk does not end once construction is finished<\/h3>\n

Placement only represents part of the solution. There may also be methods operators can employ post-construction to reduce risk.<\/p>\n

Smart curtailment adjusts operations on a turbine when expected levels of risk are greater.<\/p>\n

Future mitigation efforts may become even more focused and targeted<\/strong>.<\/p>\n

Not every turbine faces the same amount of risk. Not every species responds similarly to factors that contribute to bat fatality estimates<\/a>.<\/p>\n

Seasons in which the highest-risk conditions exist may differ from location to location. Weather conditions may also be relevant.<\/p>\n

Create renewable energy while reducing harm caused by wind energy to wildlife.<\/p>\n

Understanding where turbines are built may eventually become just as important as understanding how they function.<\/p>\n","protected":false},"excerpt":{"rendered":"

Bat deaths have proven to be the most significant challenge associated with wind energy for wildlife. Over two years, bat fatalities were examined at nineteen (19) wind farms across Iowa. A clear pattern soon emerged. The highest fatality estimates were not spread evenly across the sites. Instead, certain turbines stood out from the rest. Understanding … Read more<\/a><\/p>\n","protected":false},"author":27,"featured_media":45491,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rank_math_focus_keyword":"bat,fatalities","rank_math_title":"","rank_math_description":"Bat fatalities at 19 Iowa wind farms were higher at edge turbines, with local habitat features, weather, and turbine placement influencing collision risk.","footnotes":""},"categories":[8],"tags":[],"class_list":["post-45429","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-energy"],"_links":{"self":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts\/45429","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/users\/27"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/comments?post=45429"}],"version-history":[{"count":14,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts\/45429\/revisions"}],"predecessor-version":[{"id":45893,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/posts\/45429\/revisions\/45893"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/media\/45491"}],"wp:attachment":[{"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/media?parent=45429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/categories?post=45429"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ecoportal.net\/en\/wp-json\/wp\/v2\/tags?post=45429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}