Behavioral and Demographic Responses of Tungara Frogs to Variation in Pond Density

Ecology ◽  
2001 ◽  
Vol 82 (5) ◽  
pp. 1283 ◽  
Author(s):  
David M. Marsh
Keyword(s):  
Tungara Frogs ◽  
Demographic Responses

scholarly journals Demographic responses underlying eco‐evolutionary dynamics as revealed with inverse modelling

2019 ◽  
Vol 88 (5) ◽  
pp. 768-779
Author(s):  
Marjolein Bruijning ◽  
Eelke Jongejans ◽  
Martin M. Turcotte
Keyword(s):  
Evolutionary Dynamics ◽  
Inverse Modelling ◽  
Demographic Responses

scholarly journals Patterns of mating call preferences in túngara frogs, Physalaemus pustulosus

2007 ◽  
Vol 20 (6) ◽  
pp. 2235-2247 ◽  
Author(s):  
M. J. RYAN ◽  
X. E. BERNAL ◽  
A. S. RAND
Keyword(s):  
Physalaemus Pustulosus ◽  
Mating Call ◽  
Tungara Frogs

Plasticity in Abundance and Demographic Responses of Walleye to Elevated Exploitation in a North‐Temperate Lake

2021 ◽  
Author(s):  
Greg G. Sass ◽  
Stephanie L. Shaw ◽  
Logan W. Sikora ◽  
Matthew Lorenzoni ◽  
Mark Luehring
Keyword(s):  
Temperate Lake ◽  
Demographic Responses

scholarly journals Demographic responses of Heterocypris incongruens (Ostracoda) related to stress factors of competition, predation and food

2016 ◽  
Vol 75 (s1) ◽  
Author(s):  
Rocio Fernandez ◽  
Sarma Nandini ◽  
S.S.S. Nandini ◽  
Maria E. Castellanos-Páez
Keyword(s):  
Life Expectancy ◽  
Population Growth ◽  
Reproductive Output ◽  
Cichlid Fish ◽  
Poor Quality ◽  
Stress Factors ◽  
Temporary Ponds ◽  
Crustacean Species ◽  
Heterocypris Incongruens ◽  
Demographic Responses

<em>Heterocypris incongruens</em> is a widely distributed ostracod which can maintain its populations under stressful conditions such as those in temporary ponds and under low-quality diets, for example, detritus. It often co-occurs with cladocerans and fish living in shallow water bodies. Nevertheless, little is known about its response to the presence of predators, its consumption capacity of cyanobacteria typically present in eutrophic systems, and its interaction with other species in similar habits. We studied here the demographic responses of <em>H. incongruens</em> fed the green alga <em>Scenedesmus</em> <em>acutus</em>, two strains of <em>Microcystis </em>cf. <em>aeruginosa</em> and <em>Limnothrix</em> sp. Experiments were conducted separately and together in the presence of the cladoceran <em>Simocephalus vetulus </em>and the cichlid fish, <em>Oreochromis</em> kairomones. The ostracod maintained growth in all treatments, the reproductive output decreased on dietary <em>Limnothrix </em>sp., and its life expectancy was significantly lower with the toxic strain of <em>Microcystis</em>. The coexistence of both crustacean species increased the rate of population growth (~ 0.33 day<sup>-1</sup>) of <em>S. vetulus</em> and life expectancy (36-44 days) of <em>H. incongruens</em> on the test diets compared with controls (23-33 days). Our study suggests facilitation affects the interaction between the two microcrustaceans, especially on poor quality cyanobacterial diets.

scholarly journals Range position and climate sensitivity: The structure of among-population demographic responses to climatic variation

2017 ◽  
Vol 24 (1) ◽  
pp. 439-454 ◽  
Author(s):  
Staci M. Amburgey ◽  
David A. W. Miller ◽  
Evan H. Campbell Grant ◽  
Tracy A. G. Rittenhouse ◽  
Michael F. Benard ◽  
...  
Keyword(s):  
Climate Sensitivity ◽  
Climatic Variation ◽  
Population Demographic ◽  
Demographic Responses

scholarly journals Global analysis reveals complex demographic responses of mammals to climate change

2019 ◽  
Author(s):  
Maria Paniw ◽  
Tamora James ◽  
C. Ruth Archer ◽  
Gesa Römer ◽  
Sam Levin ◽  
...  
Keyword(s):  
Climate Change ◽  
Climatic Factors ◽  
Global Analysis ◽  
Demographic Data ◽  
Mammal Species ◽  
Full Spectrum ◽  
Terrestrial Mammals ◽  
Demographic Rates ◽  
Global Understanding ◽  
Demographic Responses

ABSTRACTApproximately 25 % of mammals are threatened globally with extinction, a risk that is amplified under climate change1. Persistence under climate change is determined by the combined effects of climatic factors on multiple demographic rates (survival, development, reproduction), and hence, on population dynamics2. Thus, to quantify which species and places on Earth are most vulnerable to climate-driven extinction, a global understanding of how demographic rates respond to climate is needed3. We synthesise information on such responses in terrestrial mammals, where extensive demographic data are available4. Given the importance of assessing the full spectrum of responses, we focus on studies that quantitatively link climate to multiple demographic rates. We identify 106 such studies, corresponding to 86 mammal species. We reveal a strong mismatch between the locations of demographic studies and the regions and taxa currently recognised as most vulnerable to climate change5,6. Moreover, we show that the effects of climate change on mammals will operate via complex demographic mechanisms: a vast majority of mammal populations display projected increases in some demographic rates but declines in others. Assessments of population viability under climate change therefore need to account for multiple demographic responses. We advocate to prioritise coordinated actions to assess mammal demography holistically for effective conservation worldwide.

Sign in / Sign up

Export Citation Format

Share Document