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Biodiversity safeguards bird communities under a changing climate
Community-level diversity works as a buffer against negative climate change impacts, especially during winter, i.e the season that has shown strongest climatic warming across the Northern Hemisphere.
On the other hand, biodiversity played a smaller role during the breeding season. Indeed, earlier studies have shown that bird communities change faster during winter than summer, which explains this pattern…
Climate change, habitat loss (and, yes, even cats) pose a greater threat to birds than windmills
Research quantifying the full scale of wind turbine activity’s impact upon birds both through their migratory patterns and killed by collision with wind turbines is a matter of current scientific studies. It is important to quantify these impacts, but it is also important to acknowledge that these impacts are certainly negligible compared to other drivers of bird mortality.
The number of birds killed by wind turbine collisions per year is estimated to be between 150,000 and 500,000, but when you put this number in perspective, it pales in comparison to other causes of bird mortality…
Saving Our Swamps [Letter in the New Yorker Magazine]
Here you will find a short letter submitted by the land trust’s executive director, under the heading “Letters respond to Annie Proulx’s piece about swamps” (and beavers as part of the climate solution):
The dewatering of North America that Proulx describes was underway well before the nineteenth century, when westward expansionists began cutting down forests and farmers began draining and tilling fields. By the time those people were “reclaiming” land for their use, fur traders had been wreaking havoc on our wetlands for almost two hundred years, through the commodification of beavers…
Study shows 90% of marine species at risk of extinction in 78 years if greenhouse gas emissions are not curbed
Greenhouse gas emissions impact the world’s climate in two ways. They raise the temperature of the atmosphere (and by extension, Earth’s surfaces and bodies of water) by holding in heat, and in the case of CO2 emissions, they make water more acidic, like carbonated soft drinks…
Beaver: The North American freshwater climate action plan
Rivers and streams, when fully connected to their floodplains, are naturally resilient systems that are increasingly part of the conversation on nature-based climate solutions. Reconnecting waterways to their floodplains improves water quality and quantity, supports biodiversity and sensitive species conservation, increases flood, drought and fire resiliency, and bolsters carbon sequestration. But, while the importance of river restoration is clear, beaver-based restoration—for example, strategic coexistence, relocation, and mimicry—remains an underutilized strategy despite ample data demonstrating its efficacy.
Heat waves may limit mating in birds, but can behavior mitigate the effects of climate change?
Scientists are racing to understand how animals respond to climate change, including the increasing prevalence and intensity of heat waves. Heat waves can be lethal, even for endotherms (warm-blooded animals) that internally regulate their own temperatures. But what about the sub-lethal effects of heat that do not kill animals but still might influence their ability to thrive in our changing world?
Behavioral and physiological effects of heat are likely but have been missing from recent high-profile studies on climate change. Researchers from Indiana University Bloomington and the University of Tennessee Knoxville recently teamed up to examine how heat and behavior interact to affect physiology…
Assisted migration
Trees are adapted to specific combinations of environmental and climatic conditions that allow them to grow, thrive, and reproduce. Climate change is already altering conditions across the planet, and changes are expected to continue in the decades to come. The rapid pace of climate change may exceed the ability of many species to adapt in place or migrate to suitable habitats, and this fundamental mismatch raises the possibility of extinction or local extirpation. Assisted migration, human-assisted movement of species in response to climate change, is one management option that is available to address this challenge. This topic page will examine some of the scientific background and management considerations related to assisted migration, focused primarily on tree species.
Climate change affects bird nesting phenology: comparing contemporary field and historical museum nesting records
Global climate change impacts species and ecosystems in potentially harmful ways. For migratory bird species, earlier spring warm-up could lead to a mismatch between nesting activities and food availability. CO2 provides a useful proxy for temperature and an environmental indicator of climate change when temperature data are not available for an entire time series.
Increasing climatic decoupling of bird abundances and distributions
Species differences in climate matching trends were related to their ecological traits, particularly habitat specialization, but not to average rates of climate and land use change within the species’ ranges. Climatic decoupling through time was particularly prominent for birds that were declining in abundance and occupancy, including threatened species….
As climate shifts, species will need to relocate, and people may have to help them
Climate change is already affecting plants and animals worldwide and is a growing threat to biodiversity, adding a new layer to the existing challenges of habitat loss, invasive species, pollution, and overexploitation. A new study surveyed the recommendations of scientists for managing biodiversity in the face of climate change, providing a summary of practical guidance and identifying areas in need of further research…
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