Results 41 to 50 of about 6,071 (169)
Nest success of ground‐nesting ducks in the wetlands of Great Salt Lake, Utah
The number of ground‐nesting ducks in the wetlands of Great Salt Lake, Utah has drastically decreased in the past few decades. A potential cause for this decline is the increase of predator species and their abundances, which has caused most nests to ...
Mark E. Bell, Michael R. Conover
doaj +1 more source
Artificial nesting sites with floating platforms may effectively support local breeding populations of waterbirds (enhancing productivity and survival) when natural sites are unavailable.
B. Manikowska–Ślepowrońska +2 more
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Seasonal variation in reproductive measures of tropical Roseate Terns Sterna dougallii: previously undescribed breeding patterns in a seabird [PDF]
Seasonal variation in egg-laying, egg size, hatching success, hatchling mass, fledging success and chick growth of Roseate Terns Sterna dougallii breeding on Aride Island (Seychelles), Indian Ocean, were studied in 1997 and 1998.
Ramos, Jaime
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Brown Trout Abundance in Boreal Streams With Large Wood
ABSTRACT Large wood has been found to be a crucial component in riverine ecosystems. However, due to the heavy channelization of rivers and intensive forestry practices over the past few decades, the amount of large wood in these ecosystems has decreased worldwide. River restoration aims to mitigate the effects of channelization and restore the channel
Alisa Koski +3 more
wiley +1 more source
High individual repeatability of the migratory behaviour of a long-distance migratory seabird
Background Understanding the evolution of migration requires knowledge of the patterns, sources, and consequences of variation in migratory behaviour, a need exacerbated by the fact that many migratory species show rapid population declines and require ...
Nathalie Kürten +6 more
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Age‐related changes of oxidative status and immune function in a long‐lived seabird
Experimental studies in humans and laboratory species have shown that the decline of the immune system with age (immunosenescence) and the accumulation of oxidative damage to macromolecules are two key contributors to the onset and progression of the ageing process. Although laboratory models have provided important insights, the physiological basis of
Beatrice Berardi +6 more
wiley +1 more source
Persistent organic pollutants (POPs) accumulate in the food web of the Great Lakes ecosystem, causing concern that these chemicals play a role in the decline of avian species such as colonial-nesting waterbirds.
Steven C. Travis +2 more
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Estuarine waterbodies typically support diverse and abundant waterbird communities. However, global environmental degradation as a result of anthropogenic activities is leading to species level changes in biodiversity, with top predators such as ...
Ian A. Russell
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When, how and why do Common Terns Sterna hirundo perform their first own brood? - Factors moving the recruitment process [PDF]
Kurzfassung der Dissertation an der Carl von Ossietzky-Universität Oldenburg, Fakultät für Mathematik und Naturwissenschaften (2009), betreut durch Prof. Dr.
Ludwigs, Jan-Dieter
core
Mallard response to experimental human disturbance on sanctuary areas is mediated by hunting
Wildlife managers often provide spatial sanctuaries for wildlife to escape both lethal (e.g. hunting) and non‐lethal (e.g. non‐consumptive recreation) human disturbance. However, as societal interest in outdoor recreation continues to climb, many areas face added pressure to allow recreation, yet studies increasingly demonstrate negative effects of ...
Abigail G. Blake‐Bradshaw +6 more
wiley +1 more source

