Sentences with phrase «habitat fragmentation by»
Common threats include: loss of nesting and roosting sites, habitat fragmentation by conversion or destruction of vegetation, habitat fragmentation by excessive exposure of nectar plants to herbicides and pollinators to pesticides, over-hunting, disruption of nectar corridors required by migratory pollinators, and competition by invasive species65.
http://www.fao.org/ Not exact matches
The current fragmentation of global financial markets may be likened to habitat fragmentation in the natural world, in which large, continuous biological habitats are divided into a greater number of smaller eco-systems, isolated from each other by a matrix of dissimilar habitats, leading inexorably to broad ecosystem decay.
«Our studies clearly show that widespread species have a much more diverse intraspecific gene pool than species that are adapted to a specific habitat,» explains Dr. Jan Christian Habel of the Technical University in Munich, and he continues, «Once these animals — due to the fragmentation of their habitats — lose the opportunity to maintain this genetic diversity by means of exchange, they will no longer be able to adapt to changing environmental conditions in the future.»
A new study by the Wildlife Conservation Society, Idaho State University and the U.S. Geological Survey suggests that habitat fragmentation and the addition of makeshift perches such as transmission polls in sagebrush ecosystems are creating preferred habitat for common ravens that threaten sensitive native bird species, including greater sage grouse.
In addition, the effects of global warming and its associated disturbances (including floods, droughts, insects, and fires) will be compounded by pollution, resource exploitation, and habitat fragmentation, adding further challenges to species» ability to adapt.
Worldwide, turtles are negatively affected by such threats as habitat loss and fragmentation, collection for food and pets, disease, and changing climates.
Another potential feedback might occur if reduced timber yields force loggers to compensate by enlarging the amount of area harvested, resulting in higher CO2 emissions through deforestation and associated fires, as well as increased rates of habitat fragmentation / degradation and species extinctions
That's not how it's explained on the BirdLife International website, where the «large and statistically significant decrease over the last 40 years in North America» is attributed to «widespread habitat fragmentation» and extensive hunting («over 20,000,000 individuals were recently being killed annually by hunters in the USA»).
«The primary threat to the Key Largo woodrat,» explains a 1999 USFWS report (which, admittedly, includes feral cats among the «other threats associated with human encroachment»), «is habitat loss and fragmentation caused by increasing urbanization.»
The species» range has been deeply disrupted by habitat loss and fragmentation, as the Australia Zoo explains here: Read more...
Other anthropogenic changes like habitat destruction and fragmentation also make it less likely that ecosystems can cope with climate change by shifting.
Climate change almost always exacerbates the problems caused by other environmental stressors including: land use change and the consequent habitat fragmentation and degradation; extraction of timber, fish, water, and other resources; biological disturbance such as the introduction of non-native invasive species, disease, and pests; and chemical, heavy metal, and nutrient pollution.
The IPCC also reports that the resilience of many ecosystems around the world is likely to be exceeded this century by an unprecedented combination of climate change; disturbances associated with climate change, such as flooding, drought, wildfire, and insects; and other global change - drivers, including land - use changes, pollution, habitat fragmentation, urbanization, and growing human populations and economies.
In addition, the effects of global warming and its associated disturbances (including floods, droughts, insects, and fires) will be compounded by pollution, resource exploitation, and habitat fragmentation, adding further challenges to species» ability to adapt.
Fencing also compounds problems for wildlife already threatened by poaching and habitat fragmentation due to mining, roads, and other human activities, conservationists say.
«We were surprised that [they] appeared to be remarkably robust to the negative impacts of landscape - scale habitat fragmentation caused by reservoir creation,» she noted, «and saw no difference in the liana communities on islands compared to the mainland.»
... According to a review by Lovich and Ennen (2013), the construction and operation of wind farms have both potential and known impacts on terrestrial vertebrates, such as: (i) increase in direct mortality due to traffic collisions; (ii) destruction and modification of the habitat, including road development, habitat fragmentation and barriers to gene flow; (iii) noise effects, visual impacts, vibration and shadow flicker effects from turbines; (iv) electromagnetic field generation; (v) macro and microclimate change; (vi) predator attraction; and (vii) increase in fire risks.
Those that are effectively trapped by habitat fragmentation in areas where climate changes detrimentally, even though suitable climatic habitat may exist for them elsewhere in the world.
«The abundance and number of spider species is negatively affected by the impact of many human land uses, such as habitat fragmentation, fire and pesticides», Samuel Prieto - Benítez and Marcos Méndez, researchers at the URJC Biodiversity and Conservation Department, tell SINC.
The butterfly and its native host plant faces localized threats in vulnerable parts of its range — formally extirpated from Santa Cruz county and threatened by habitat fragmentation, development near its host plant, and invasive plant species — impacts that face many species of specialist butterflies.
A major threat to a species population isn't necessarily habitat loss but habitat fragmentation — the division of their home by roads and other human - made obstacles that are usually deadly.
... The resilience of many ecosystems can be enhanced by reducing non-climatic stresses such as water pollution, habitat fragmentation and invasive species.