Results 131 to 140 of about 23,996 (301)

Spatial metrics in fire ecology: seeking consistency amidst complexity

open access: yesBiological Reviews, EarlyView.
ABSTRACT Technological advances, including remote sensing, have led to a proliferation of metrics used in ecological studies to examine spatial patterns of fire regimes and their ecological effects. Researchers can use many different metrics to analyse spatial variation in both fire events and resulting fire regimes, including fire size, shape ...
Alexander R. Carey   +5 more
wiley   +1 more source

The influence of rivers on seabird foraging ecology

open access: yesBiological Reviews, EarlyView.
ABSTRACT Rivers act as vital arteries to the world's oceans, delivering fresh water and nutrients that sustain marine ecosystems. Globally, river flow increasingly is being altered by climate change and anthropogenic pressures; yet the significance of rivers to predatory marine species, such as seabirds, and the extent to which river‐related changes ...
Julia B. Morais   +2 more
wiley   +1 more source

Rethinking False Spring Risk [PDF]

open access: yes
Temperate plants are at risk of being exposed to late spring freezes. These freeze events - often called false springs - are one of the strongest factors determining temperate plants species range limits and can impose high ecological and economic damage.
Chamberlain, C. J.   +3 more
core   +1 more source

Circular 20 [PDF]

open access: yes, 1953
Since fanning in Alaska first began and especially since dairy farming became the primary agricultural industry, there has existed a need for hardy legumes which would survive Alaska winters and produce satisfactory yields of high quality forage. To
Hodgson, H.J.   +2 more
core  

Extent, characteristics and policy applications of Key Biodiversity Areas

open access: yesBiological Reviews, EarlyView.
ABSTRACT A global standard for the identification of Key Biodiversity Areas (KBAs) was published 10 years ago to provide a unified set of criteria for identifying ‘sites of significance for the global persistence of biodiversity’. We review the initiative's origins, the KBA identification process, characteristics of the current network, threats, policy
Stuart H. M. Butchart   +57 more
wiley   +1 more source

Extreme Minimum Winter Temperatures in Ohio [PDF]

open access: yes, 1994
Author Institution: Department of Geography, Firelands College, Bowling Green State UniversityThe Extreme Minimum Winter Temperature (EMWT) is the coldest temperature recorded each winter at a given weather station.
Edgell, Dennis J.
core  

A roadmap to key traits of invasive Drosophilidae

open access: yesBiological Reviews, EarlyView.
ABSTRACT Biological invasions have intensified in recent decades, mostly driven by international trade and travel, raising significant concerns, particularly regarding insect pests. Once non‐native species establish, they can disrupt natural ecosystem stability, undermine agroecosystem sustainability and cause substantial economic losses.
Gwenaëlle Deconninck   +14 more
wiley   +1 more source

Winterhardiness, Forage Production, and Persistence of Introduced and Native Grasses and Legumes in Southcentral Alaska [PDF]

open access: yes, 1994
This study consisted of four separate field experiments, each of six years duration, conducted at the University of Alaska’s Matanuska Research Farm (61.6oN) near Palmer in southcentral Alaska.
Klebesadel, Leslie J.
core  

How wildlife respond to tropical cyclones: short‐term tactics and long‐term impacts

open access: yesBiological Reviews, EarlyView.
ABSTRACT From butterflies to lizards and from sharks to seabirds, wildlife exhibit tactics to survive the impacts of tropical cyclones, also known as hurricanes, cyclones, or typhoons depending on where they occur. Some species seek refuge during the storm by moving, some remain in place and ride it out, and others move longer distances, avoiding the ...
Erin L. Koen   +15 more
wiley   +1 more source

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