scholarly journals Evaluate Habitat Use and Population Dynamics of Lampreys in Cedar Creek, 2000 Annual Report.

2001 ◽  
Author(s):  
Jennifer Stone
Keyword(s):  
Population Dynamics ◽  
Habitat Use ◽  
Annual Report ◽  
Cedar Creek

scholarly journals [Development and testing of theories of population dynamics]. First annual report

1990 ◽  
Author(s):  
W.W. Murdoch ◽  
J.R. Bence ◽  
E. McCauley ◽  
R.M. Nisbet
Keyword(s):  
Population Dynamics ◽  
Annual Report

Modelling climate influences on population dynamics and diurnal time budget of the Shelduck (Tadorna tadorna) wintering in Ramsar wetlands of Algeria

2019 ◽  
Vol 12 (3) ◽  
pp. 77-95 ◽  
Author(s):  
Adel Bezzalla ◽  
Moussa Houhamdi ◽  
Mohamed Cherif Maazi ◽  
Haroun Chenchouni
Keyword(s):  
Population Dynamics ◽  
Habitat Use ◽  
Generalized Linear Models ◽  
Linear Models ◽  
Time Budget ◽  
Climate Variables ◽  
Conspecific Density ◽  
Lack Of Information ◽  
International Importance ◽  
Important Bird Area

Several North African wetlands are classified as wetlands of international importance (Ramsar sites and Important Bird Area) because thousands of Shelducks ( Tadorna tadorna) winter in these habitats. However, Shelduck’s patterns of habitat use in these protected wetlands during the wintering season are still hindered by lack of information in arid and semi-arid regions regarding population dynamics and the effects of climate variables. This ornithological survey aims to study population dynamics and temporal patterns of diurnal activities of the Shelduck at two Ramsar and Important Bird Area sites (Chott Tinsilt and Sebkhet Ezzemoul) with respect to the effect of climatic parameters of the habitat in order to deepen our understanding of wintering strategies and habitat use. Populations were weekly censused from 06:00 to 19:00 during the entire wintering season (September 2015–May 2016). Diurnal behavioural activities were monitored at the same rate, and then the variation of time budget was tested using generalized linear model to determine the effects of climate variables and conspecific density dependence. The Shelduck was observed at both sites from the end of November and remained there until the total desiccation of both lakes in early May. Trends of Shelduck’s population dynamics differed between the two sites. Generalized linear models revealed the significant effects of temperature, wind speed and number of snowy days on population dynamics. Feeding was the main diurnal activity of the Shelduck at both sites with 80.2% of time budget at Chott Tinsilt (mainly feeding at lake shores) and 82% at Sebkhet Ezzemoul (mainly feeding in water). The generalized linear models showed that the variation of time budget allocated to different diurnal activities was not density-dependent, but rather it was negatively affected by the increase of air temperature. Significant effects of the interaction between population size and some climatic variables were found and discussed. During the whole wintering season, Chott Tinsilt and Sebkhet Ezzemoul play an important ecological role since they offer a wide-ranging diurnal forging habitat and a shelter for thousands of this waterfowl.

Introduction of the European minnow into a subalpine lake: habitat use and long-term changes in population dynamics

2002 ◽  
Vol 60 (5) ◽  
pp. 1308-1321 ◽  
Author(s):  
J. Museth ◽  
R. Borgstrom ◽  
J. E. Brittain ◽  
I. Herberg ◽  
C. Naalsund
Keyword(s):  
Population Dynamics ◽  
Habitat Use ◽  
European Minnow ◽  
Subalpine Lake ◽  
Long Term Changes

Mute swans in the Wylye Valley: Population dynamics and habitat use

1994 ◽  
Vol 40 (1) ◽  
pp. 88-93 ◽  
Author(s):  
David P.C. Trump ◽  
David A. Stone ◽  
Carey F.B. Coombs ◽  
Chris J. Feare
Keyword(s):  
Population Dynamics ◽  
Habitat Use ◽  
Mute Swans

scholarly journals Natural history, population dynamics, and habitat use of humpback whales over 30 years on an Alaska feeding ground

Ecosphere ◽  
2017 ◽  
Vol 8 (1) ◽  
pp. e01641 ◽  
Author(s):  
Christine M. Gabriele ◽  
Janet L. Neilson ◽  
Janice M. Straley ◽  
C. Scott Baker ◽  
Jennifer A. Cedarleaf ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Natural History ◽  
Habitat Use ◽  
Humpback Whales ◽  
Feeding Ground
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