Inertia: the discrepancy between individual and common good in
... The group selection debate of the 1960s made it clear that evolution does not necessarily increase population performance. Individuals can be selected to have traits that diminish a common good and make population persistence difficult. At the extreme, the discrepancy between levels of selection is ...
... The group selection debate of the 1960s made it clear that evolution does not necessarily increase population performance. Individuals can be selected to have traits that diminish a common good and make population persistence difficult. At the extreme, the discrepancy between levels of selection is ...
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... 2010). Numerous studies indicate that abiotic parameters, such as temperature, precipitation, and nutrient concentrations, can directly influence spatial and temporal trait patterns both at the population and at the community levels (Brun et al., 2016). TBE therefore constitutes a powerful tool link ...
... 2010). Numerous studies indicate that abiotic parameters, such as temperature, precipitation, and nutrient concentrations, can directly influence spatial and temporal trait patterns both at the population and at the community levels (Brun et al., 2016). TBE therefore constitutes a powerful tool link ...
LIFE HISTORY VARIATION AND DIET OF THE ENDANGERED
... focal population following a drastic increase in salinity. Naturally, the presence of more resilient adult individuals allows tidewater goby populations to persist through these periodic environmental fluctuations with high juvenile mortality. In contrast, a narrow population age structure, associat ...
... focal population following a drastic increase in salinity. Naturally, the presence of more resilient adult individuals allows tidewater goby populations to persist through these periodic environmental fluctuations with high juvenile mortality. In contrast, a narrow population age structure, associat ...
2008_1009Task2_RME_Guidance_Partial
... Implementation (compliance) monitoring is used to evaluate whether elements of the recovery plan have been implemented and whether activities are in compliance with sections of the ESA. Action effectiveness monitoring tests whether management actions have been effective in creating the intended outp ...
... Implementation (compliance) monitoring is used to evaluate whether elements of the recovery plan have been implemented and whether activities are in compliance with sections of the ESA. Action effectiveness monitoring tests whether management actions have been effective in creating the intended outp ...
recruitment and the local dynamics of open marine
... not go extinct and are reestablished on a regular basis, except at very small spatial scales (e.g. 26, 28). Only a handful of metapopulation models incorporate these features, which are therefore directly applicable to marine systems (11, ...
... not go extinct and are reestablished on a regular basis, except at very small spatial scales (e.g. 26, 28). Only a handful of metapopulation models incorporate these features, which are therefore directly applicable to marine systems (11, ...
Chapter 7 - Ecology, Social Behavior, and Conservation in Zebras
... environment should lead to changes in behavior. If not, environmental change could be pathological, lowering survival and fecundity. However, if species experiencing changes are equipped with sufficient genetic and epigenetic variation, behavioral adjustments are likely. If these behaviors maintain ...
... environment should lead to changes in behavior. If not, environmental change could be pathological, lowering survival and fecundity. However, if species experiencing changes are equipped with sufficient genetic and epigenetic variation, behavioral adjustments are likely. If these behaviors maintain ...
Geographic variation in North American gypsy moth cycles
... Dwyer and Elkinton 1993); and (2) generalist predators (particularly small mammals) eat pupae (Campbell and Sloan 1977, Smith 1985, Elkinton et al. 1996, Jones et al. 1998). Other natural enemies, such as specialist and generalist parasitoids, also attack the gypsy moth. However, Dwyer et al. (2004) ...
... Dwyer and Elkinton 1993); and (2) generalist predators (particularly small mammals) eat pupae (Campbell and Sloan 1977, Smith 1985, Elkinton et al. 1996, Jones et al. 1998). Other natural enemies, such as specialist and generalist parasitoids, also attack the gypsy moth. However, Dwyer et al. (2004) ...
What causes outbreaks of the gypsy moth in North America?
... calculating the PACF for a specific lag time unit. The PACF may be diagnostic of the process generating patterns of abundance (Royama 1992). Turchin (1990) and Berryman (1994) analyzed time series of the abundance of several forest insect species and found that PACFs of many of the series contained ...
... calculating the PACF for a specific lag time unit. The PACF may be diagnostic of the process generating patterns of abundance (Royama 1992). Turchin (1990) and Berryman (1994) analyzed time series of the abundance of several forest insect species and found that PACFs of many of the series contained ...
What causes outbreaks of the gypsy moth in North America?
... calculating the PACF for a specific lag time unit. The PACF may be diagnostic of the process generating patterns of abundance (Royama 1992). Turchin (1990) and Berryman (1994) analyzed time series of the abundance of several forest insect species and found that PACFs of many of the series contained ...
... calculating the PACF for a specific lag time unit. The PACF may be diagnostic of the process generating patterns of abundance (Royama 1992). Turchin (1990) and Berryman (1994) analyzed time series of the abundance of several forest insect species and found that PACFs of many of the series contained ...
Ecology (Ch. 2-5): TEST PRACTICE Multiple Choice Identify the
... period will r = 0? a. period “A” c. period “C” b. period “B” d. period “D” ____ 22. Refer to the illustration above. The time period during which r would have a negative value is a. period “A” c. period “C” b. period “B” d. period “D” ____ 23. As a population reaches its carrying capacity, there is ...
... period will r = 0? a. period “A” c. period “C” b. period “B” d. period “D” ____ 22. Refer to the illustration above. The time period during which r would have a negative value is a. period “A” c. period “C” b. period “B” d. period “D” ____ 23. As a population reaches its carrying capacity, there is ...
2005/062 - Vagues/Waves
... Winter skate (Leucoraja ocellata), also known as big or eyed skate, have only been reported in the Northwest Atlantic. Their range extends from the Gulf of St. Lawrence and the southern Newfoundland coast southward to Cape Hatteras. Within this range they have been reported from waters less than 1 m ...
... Winter skate (Leucoraja ocellata), also known as big or eyed skate, have only been reported in the Northwest Atlantic. Their range extends from the Gulf of St. Lawrence and the southern Newfoundland coast southward to Cape Hatteras. Within this range they have been reported from waters less than 1 m ...
Wolverine (Gulo gulo) - Registre public des espèces en péril
... Common name Wolverine (Western population) Scientific name Gulo gulo Status Special Concern Reason for designation Estimated total population size exceeds 13,000 mature individuals. Declines have been reported in Alberta and parts of British Columbia and Ontario. A distinct subspecies may be extirpa ...
... Common name Wolverine (Western population) Scientific name Gulo gulo Status Special Concern Reason for designation Estimated total population size exceeds 13,000 mature individuals. Declines have been reported in Alberta and parts of British Columbia and Ontario. A distinct subspecies may be extirpa ...
Limiting Factors in Caribou Population Ecology
... Abstract: Caribou and wild reindeer populations fluctuate over time. O n this fact there is general agreement. Factors responsible for population limitation and subsequent declines have been examined within the framework of animal population theory. There is, however, little agreement when factors l ...
... Abstract: Caribou and wild reindeer populations fluctuate over time. O n this fact there is general agreement. Factors responsible for population limitation and subsequent declines have been examined within the framework of animal population theory. There is, however, little agreement when factors l ...
Fisheries Management Plan for Leech Lake 2016
... successes of and knowledge gained from previous plans by recommending specific goals, objectives, and management actions aimed at preserving a high-quality, species-diverse fishery on Leech Lake. New to the 20162020 management plan is the use of 3-year moving averages (most recent three observations ...
... successes of and knowledge gained from previous plans by recommending specific goals, objectives, and management actions aimed at preserving a high-quality, species-diverse fishery on Leech Lake. New to the 20162020 management plan is the use of 3-year moving averages (most recent three observations ...
The importance of crustacean zooplankton in
... (Sommer et al., 1986) and there have been many attempts to uncover the forces driving population dynamics in the field. Seasonal succession in phytoplankton and zooplankton species has been extensively studied. In the latter group, there is a distinct skewness towards crustacean successional pattern ...
... (Sommer et al., 1986) and there have been many attempts to uncover the forces driving population dynamics in the field. Seasonal succession in phytoplankton and zooplankton species has been extensively studied. In the latter group, there is a distinct skewness towards crustacean successional pattern ...
Consumer mobility and the relative importance of consumption and
... juveniles); (2) all colonization occurs at a single point in time following a disturbance that completely clears a patch; (3) consumer and producer numbers remain constant following the initial colonization event; and (4) all producers are competitive equivalents such that the intensity of competiti ...
... juveniles); (2) all colonization occurs at a single point in time following a disturbance that completely clears a patch; (3) consumer and producer numbers remain constant following the initial colonization event; and (4) all producers are competitive equivalents such that the intensity of competiti ...
Conservation of Wildlife Populations
... Throughout I will present rules of thumb. These guidelines represent simple answers to complex questions, always a dangerous undertaking. I hope they will be useful for distilling subtle and complicated topics into the bare essence that can inform management as a starting point. Of course there will ...
... Throughout I will present rules of thumb. These guidelines represent simple answers to complex questions, always a dangerous undertaking. I hope they will be useful for distilling subtle and complicated topics into the bare essence that can inform management as a starting point. Of course there will ...
Four types of interference competition and their impacts on
... the per-capita growth rate which mathematically is equivalent to an increase in mortality. Any inherent differences between the four different types of interference competition considered here can thus only become apparent in physiologically structured population models that incorporate ontogenetic ...
... the per-capita growth rate which mathematically is equivalent to an increase in mortality. Any inherent differences between the four different types of interference competition considered here can thus only become apparent in physiologically structured population models that incorporate ontogenetic ...
Importance of the Allee effect for reintroductions1
... In many species, individuals benefit from the presence of conspecifics. The level at which intraspecific competition exceeds the benefits of conspecific presence varies much between species. There is a growing realization that this level can be relatively high in many species. In fact, in some cases ...
... In many species, individuals benefit from the presence of conspecifics. The level at which intraspecific competition exceeds the benefits of conspecific presence varies much between species. There is a growing realization that this level can be relatively high in many species. In fact, in some cases ...
Use of skeletochronological analysis to estimate the age of
... ABSTRACT: Although growth rate and age data are essential for leatherback management, estimates of these demographic parameters remain speculative due to the cryptic life history of this endangered species. Skeletochronological analysis of scleral ossicles obtained from 8 captive, known-age and 33 w ...
... ABSTRACT: Although growth rate and age data are essential for leatherback management, estimates of these demographic parameters remain speculative due to the cryptic life history of this endangered species. Skeletochronological analysis of scleral ossicles obtained from 8 captive, known-age and 33 w ...
Developing Methodologies for Studying Elasmobranchs and Other Data-Poor Species
... Pop-up satellite archival tags (PSATs) are commonly used to assess large scale movements of aquatic animals (e.g., Lutcavage et al. 1999; Musyl et al. 2011). PSATs are electronic tags that can internally store data and transmit messages to a satellite. The satellite tags record temperature, pressure ...
... Pop-up satellite archival tags (PSATs) are commonly used to assess large scale movements of aquatic animals (e.g., Lutcavage et al. 1999; Musyl et al. 2011). PSATs are electronic tags that can internally store data and transmit messages to a satellite. The satellite tags record temperature, pressure ...
Truly Long-Term Sustainability: An Archaeological Analysis of
... from their studies have the potential for reconstructing natural and anthropogenic causes of resource collapse over a multi-millennia time frame and will contribute to implementing new environmental policy that can take into consideration sustainability policies for the truly long term. In this effo ...
... from their studies have the potential for reconstructing natural and anthropogenic causes of resource collapse over a multi-millennia time frame and will contribute to implementing new environmental policy that can take into consideration sustainability policies for the truly long term. In this effo ...
Population and Ecosystem Attribute Trends of Aquatic
... predictor for Shannon’s Diversity Index. The next five equations analyzed various ecosystem attributes based on yearly precipitation. The key variables that were analyzed during the study include yearly precipitation, population reports for each species, and Shannon’s Diversity Index, as well as the ...
... predictor for Shannon’s Diversity Index. The next five equations analyzed various ecosystem attributes based on yearly precipitation. The key variables that were analyzed during the study include yearly precipitation, population reports for each species, and Shannon’s Diversity Index, as well as the ...
desert bighorn sheep of new mexico
... recommendations coming from the workshop were accepted by all participants, thus representing a consensus. Working group reports can be found in sections 3-5 of this document. Working Group Summaries Life History and Modeling • Under current conditions, both the component populations and the aggrega ...
... recommendations coming from the workshop were accepted by all participants, thus representing a consensus. Working group reports can be found in sections 3-5 of this document. Working Group Summaries Life History and Modeling • Under current conditions, both the component populations and the aggrega ...
What controls tropical reef fish populations
... lim~tingpopulations of marine organisms, part~cularlytroplcal reef fishes. We monitored r e c r u ~ t ~ n e n t and populat~ondensities of juven~lesize classes In French grunt Haemulon flavolineatum (Haemulidae) from October 1978 through December 1980 In a portion of T a g u e Bay, St. Croix, U. S. ...
... lim~tingpopulations of marine organisms, part~cularlytroplcal reef fishes. We monitored r e c r u ~ t ~ n e n t and populat~ondensities of juven~lesize classes In French grunt Haemulon flavolineatum (Haemulidae) from October 1978 through December 1980 In a portion of T a g u e Bay, St. Croix, U. S. ...