MarineBio Conservation SocietyEcosystem News   :: ScienceDaily

Invasive species in an ecosystem harm native organisms but aid other invasive species

Tue, 23 Oct 2018 13:05:13 EDT ~ The presence of an invasive species in an ecosystem makes native organisms more susceptible to pollutants and may encourage the spread of additional invasive species, according to new research. Find out more...

Biodiversity for the birds

Tue, 23 Oct 2018 13:03:40 EDT ~ Can't a bird get some biodiversity around here? The landscaping choices homeowners make can lead to reduced bird populations, thanks to the elimination of native plants and the accidental creation of food deserts. Find out more...

Availability of nitrogen to plants is declining as climate warms

Mon, 22 Oct 2018 13:57:22 EDT ~ Researchers have found that global changes, including warming temperatures and increased levels of carbon dioxide in the atmosphere, are causing a decrease in the availability of a key nutrient for terrestrial plants. This could affect the ability of forests to absorb carbon dioxide from the atmosphere and reduce the amount of nutrients available for the creatures that eat them. Find out more...

Fish give up the fight after coral bleaching

Mon, 22 Oct 2018 12:28:30 EDT ~ Researchers found that when water temperatures heat up for corals, fish 'tempers' cool down, providing the first clear evidence of coral bleaching serving as a trigger for rapid change in reef fish behavior. Researchers show how the iconic butterflyfish, considered to be sensitive indicators of reef health, can offer an early warning sign that reef fish populations are in trouble. Find out more...

Rising temperatures and human activity are increasing storm runoff and flash floods

Mon, 22 Oct 2018 08:58:20 EDT ~ Researchers have demonstrated for the first time that runoff extremes have been dramatically increasing in response to climate and human-induced changes. Their findings show a large increase in both precipitation and runoff extremes driven by both human activity and climate change. They also found that storm runoff has a stronger response than precipitation to human-induced changes (climate change, land-use land-cover changes, etc). Find out more...

Genetic behavior reveals cause of death in poplars essential to ecosystems, industry

Fri, 19 Oct 2018 10:06:01 EDT ~ Scientists studying a valuable, but vulnerable, species of poplar have identified the genetic mechanism responsible for the species' inability to resist a pervasive and deadly disease. Their finding could lead to more successful hybrid poplar varieties for increased biofuels and forestry production and protect native trees against infection. Find out more...

Biodiversity can also destabilize ecosystems

Thu, 18 Oct 2018 08:26:47 EDT ~ According to the prevailing opinion, species-rich ecosystems are more stable against environmental disruptions such as drought, hot spells or pesticides. The situation is not as simple as it seems, however, as ecologists have now discovered. Under certain environmental conditions, increased biodiversity can also lead to an ecosystem becoming more unstable. Find out more...

Arctic greening thaws permafrost, boosts runoff

Wed, 17 Oct 2018 17:28:41 EDT ~ A new collaborative study has investigated Arctic shrub-snow interactions to obtain a better understanding of the far north's tundra and vast permafrost system. Incorporating extensive in situ observations, scientists tested their theories with a novel 3D computer model and confirmed that shrubs can lead to significant degradation of the permafrost layer that has remained frozen for tens of thousands of years. These interactions are driving increases in discharges of fresh water into rivers, lakes and oceans. Find out more...

Arctic ice sets speed limit for major ocean current

Wed, 17 Oct 2018 14:09:25 EDT ~ Scientists have now identified a key mechanism, which they call the 'ice-ocean governor,' that controls how fast the Beaufort Gyre spins and how much fresh water it stores. Researchers report that the Arctic's ice cover essentially sets a speed limit on the gyre's spin. Find out more...

Letting nature take its course: Wolves in Yellowstone National Park

Tue, 16 Oct 2018 15:07:22 EDT ~ Since the reintroduction of wolves to Yellowstone National Park in 1995, the park's ecosystem has become a deeply complex and heterogeneous system, aided by a strategy of minimal human intervention. The new study is a synthesis of 40 years of research on large mammals in Yellowstone National Park. Find out more...