Zebra reduce predation risk in mixed-species
... In a study of lion prey preferences, Hayward and Kerley (2005) found that across 48 different lion populations, giraffes were the 4th most preferred prey item, whereas zebra were the 7th most preferred prey item. Because both zebra and giraffe are categorized as favored prey items for lions (Hayward ...
... In a study of lion prey preferences, Hayward and Kerley (2005) found that across 48 different lion populations, giraffes were the 4th most preferred prey item, whereas zebra were the 7th most preferred prey item. Because both zebra and giraffe are categorized as favored prey items for lions (Hayward ...
POPULATION CRITICAL: How are Caribou Faring?
... the area as undisturbed habitat; and (2) biophysical attributes required by boreal caribou to carry out life processes.”5 The 65% threshold is associated with a 60% probability that a given caribou population is self-sustaining. The federal Recovery Strategy also mandates that provinces and territor ...
... the area as undisturbed habitat; and (2) biophysical attributes required by boreal caribou to carry out life processes.”5 The 65% threshold is associated with a 60% probability that a given caribou population is self-sustaining. The federal Recovery Strategy also mandates that provinces and territor ...
A systematic review of the impacts of feral, stray and companion
... Human habitation is strongly linked to the decline of many species not adapted to urban environments (Radeloff et al. 2005). Alongside fundamental changes in habitat, and inability to adapt, myriad anthropogenic factors place significant pressure on natural or native populations of animals within th ...
... Human habitation is strongly linked to the decline of many species not adapted to urban environments (Radeloff et al. 2005). Alongside fundamental changes in habitat, and inability to adapt, myriad anthropogenic factors place significant pressure on natural or native populations of animals within th ...
long term study of competition between two co
... Long-term data on co-existing A. astacus and P. leniusculus demonstrate that they cannot live in sympatry without competition in which P. leniusculus with its larger body and chela size, faster growth, more aggressive behaviour and greater fecundity would be the stronger. However, a similar weakenin ...
... Long-term data on co-existing A. astacus and P. leniusculus demonstrate that they cannot live in sympatry without competition in which P. leniusculus with its larger body and chela size, faster growth, more aggressive behaviour and greater fecundity would be the stronger. However, a similar weakenin ...
Book of Abstracts - Tapir Specialist Group
... Adrián Naveda-Rodriguez & Armando Lopez The Karyotype of Tapirus terrestris from Venezuela. Marisol Aguilera & Angela Expósito The Tapir, Tapirus terrestris (Linnaeus, 1758): A Conservation Education Tool within the Center for the Conservation of Animal Diversity in the Buffer Zone of Turuepano Nati ...
... Adrián Naveda-Rodriguez & Armando Lopez The Karyotype of Tapirus terrestris from Venezuela. Marisol Aguilera & Angela Expósito The Tapir, Tapirus terrestris (Linnaeus, 1758): A Conservation Education Tool within the Center for the Conservation of Animal Diversity in the Buffer Zone of Turuepano Nati ...
Atlantic Salmon Salmo salar
... and eastward to the northern tip of Cape Breton. Small (one-sea-winter) and large (multi-sea-winter) fish have both declined over the last 3 generations, approximately 34% and 19%, respectively, for a net decline of all mature individuals of about 28%. This recent 3-generation decline represents a c ...
... and eastward to the northern tip of Cape Breton. Small (one-sea-winter) and large (multi-sea-winter) fish have both declined over the last 3 generations, approximately 34% and 19%, respectively, for a net decline of all mature individuals of about 28%. This recent 3-generation decline represents a c ...
Landscape Patterns Environmental Quality Analysis
... Part 1 of this report outlines basic landscape ecological principles, patterns, and models that establish a framework for understanding the empirical findings outlined in the Landscape Indicators section (Section 2). Much of this information is based on Richard Forman’s work and others who have laid ...
... Part 1 of this report outlines basic landscape ecological principles, patterns, and models that establish a framework for understanding the empirical findings outlined in the Landscape Indicators section (Section 2). Much of this information is based on Richard Forman’s work and others who have laid ...
Recovery plans for Powelliphanta land snails, 2003-2013
... Before such surveys are undertaken, the people who previously found shells in these sites should be sought out to obtain more detailed site descriptions if possible. ...
... Before such surveys are undertaken, the people who previously found shells in these sites should be sought out to obtain more detailed site descriptions if possible. ...
Management Plan for the Pacific Harbour Porpoise (Phocoena
... affecting Harbour Porpoise in B.C. are; entanglement in fishing or other gear, habitat degradation, toxic spills, chemical contamination and acoustic disturbance. In some cases these factors threaten the population directly; in other cases they affect Harbour Porpoise habitat. It was concluded that ...
... affecting Harbour Porpoise in B.C. are; entanglement in fishing or other gear, habitat degradation, toxic spills, chemical contamination and acoustic disturbance. In some cases these factors threaten the population directly; in other cases they affect Harbour Porpoise habitat. It was concluded that ...
Differences in feeding adaptations in intertidal and
... CR = V Loge C0 −Loge Ct − a /t where V is the volume of suspension, C0 is the initial concentration, Ct is the final concentration, a is the rate at which particle concentration changed in the control suspension, and t is the duration of the experiment. At the end of the CR experiments, all snails w ...
... CR = V Loge C0 −Loge Ct − a /t where V is the volume of suspension, C0 is the initial concentration, Ct is the final concentration, a is the rate at which particle concentration changed in the control suspension, and t is the duration of the experiment. At the end of the CR experiments, all snails w ...
Ecological Impacts of Deer Overabundance.
... Deer generate both positive and negative economic values, and negative values increase as deer become overabundant (Conover 1997). Browsing of tree seedlings by deer reduces economic value, ecological stability, and species diversity of forests, in addition to reducing tree growth, which, in turn, d ...
... Deer generate both positive and negative economic values, and negative values increase as deer become overabundant (Conover 1997). Browsing of tree seedlings by deer reduces economic value, ecological stability, and species diversity of forests, in addition to reducing tree growth, which, in turn, d ...
08
... Makua IP. In the IP, where the number of immature individuals was unknown, no information was recorded in this field. For this report, the number of immature individuals is always reported, so either the number of immature plants or a ‘0’ is recorded. Where population units were merged, numbers were ...
... Makua IP. In the IP, where the number of immature individuals was unknown, no information was recorded in this field. For this report, the number of immature individuals is always reported, so either the number of immature plants or a ‘0’ is recorded. Where population units were merged, numbers were ...
Ontogenetic Shifts and Symbiont Succession in a
... size (Thompson 1988, Bronstein 1994). Further, symbionts may associate with hosts during life stages that provide greater rewards and services to the symbiont. However, if there are multiple symbionts in a community that could utilize a host during a particular life stage then it is possible that d ...
... size (Thompson 1988, Bronstein 1994). Further, symbionts may associate with hosts during life stages that provide greater rewards and services to the symbiont. However, if there are multiple symbionts in a community that could utilize a host during a particular life stage then it is possible that d ...
Crayfish Identification, Distribution and Legislation
... Holdich D.M. & Sibley P.J. (2009) ICS and NICS in Britain in the 2000s; Brickland J, Holdich D.M. and Imhoff E.M. (eds). Crayfish conservation in the British Isles. Proceedings of a conference held on 25 th March 2009 in Leeds, UK. Link to conference proceedings. Rogers, D. & Watson, E. (2010) Distr ...
... Holdich D.M. & Sibley P.J. (2009) ICS and NICS in Britain in the 2000s; Brickland J, Holdich D.M. and Imhoff E.M. (eds). Crayfish conservation in the British Isles. Proceedings of a conference held on 25 th March 2009 in Leeds, UK. Link to conference proceedings. Rogers, D. & Watson, E. (2010) Distr ...
Orconectes rusticus The goals of this document are to: State of Michigan’s
... other crustacean, making isolation of treated waters a requirement before treatment can take place. Pyblast used on invasive red swamp crayfish showed 90% mortality at concentrations of 0.05 mg/L 12 hours after treatment and 95% by 72; laboratory tests showed 100% mortality (Cecchinelli 2012). Resea ...
... other crustacean, making isolation of treated waters a requirement before treatment can take place. Pyblast used on invasive red swamp crayfish showed 90% mortality at concentrations of 0.05 mg/L 12 hours after treatment and 95% by 72; laboratory tests showed 100% mortality (Cecchinelli 2012). Resea ...
Feral goat management
... Although mustering feral goats for slaughter or live sale is labour-intensive and limited to relatively flat terrain (Harrington, 1982), it is most efficient at high goat densities. The advantage of this technique in the context of harvesting is that the cost of control is either partly or fully off ...
... Although mustering feral goats for slaughter or live sale is labour-intensive and limited to relatively flat terrain (Harrington, 1982), it is most efficient at high goat densities. The advantage of this technique in the context of harvesting is that the cost of control is either partly or fully off ...
The Influence of Interspecific Competition and Other Factors on the
... lower zone. It seemed probable that this species was eliminated by the lower one, Balanus balanoides (L), in a struggle for a common requisite which was in short supply. In the rocky intertidal region, space for attachment and growth is often extremely limited. This paper is an account of some obser ...
... lower zone. It seemed probable that this species was eliminated by the lower one, Balanus balanoides (L), in a struggle for a common requisite which was in short supply. In the rocky intertidal region, space for attachment and growth is often extremely limited. This paper is an account of some obser ...
Unusual ADP-forming acetyl-coenzyme A synthetases from the
... (Schönheit and Schäfer 1995). This unusual synthetase was first detected in the domain of eukarya, in the protists Entamoeba histolytica and Giardia lamblia, where it is involved in acetate formation and ATP production during fermentative metabolism (Reeves et al. 1977; Sanchez and Müller 1996). I ...
... (Schönheit and Schäfer 1995). This unusual synthetase was first detected in the domain of eukarya, in the protists Entamoeba histolytica and Giardia lamblia, where it is involved in acetate formation and ATP production during fermentative metabolism (Reeves et al. 1977; Sanchez and Müller 1996). I ...
resource here - Global Sustainable Tourism Council
... Written for a non-specialist readership, this Guide to Indicators of Reef Health and Social Well-being in the Mesoamerican Reef Region provides the first version of an evolving toolkit for field scientists, managers and other stakeholders engaged in long-term study and conservation in the Mesoameric ...
... Written for a non-specialist readership, this Guide to Indicators of Reef Health and Social Well-being in the Mesoamerican Reef Region provides the first version of an evolving toolkit for field scientists, managers and other stakeholders engaged in long-term study and conservation in the Mesoameric ...
Ecology 96 - Altieri Lab
... Abstract. Ecological studies of plant distributions along environmental gradients, such as plant zonation in salt marshes, have primarily focused on abiotic stress and plant interactions (competition and facilitation). A decades-old paradigm is that the stressful and benign boundaries of salt marsh ...
... Abstract. Ecological studies of plant distributions along environmental gradients, such as plant zonation in salt marshes, have primarily focused on abiotic stress and plant interactions (competition and facilitation). A decades-old paradigm is that the stressful and benign boundaries of salt marsh ...
Trout cod (Maccullochella macquariensis)recovery plan
... The trout cod (Maccullochella macquariensis) is a large, predatory, freshwater fish that has been listed as ‘endangered’ under the NSW Fisheries Management Act 1994. It is also listed as ‘endangered’ under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 and the ACT Nat ...
... The trout cod (Maccullochella macquariensis) is a large, predatory, freshwater fish that has been listed as ‘endangered’ under the NSW Fisheries Management Act 1994. It is also listed as ‘endangered’ under the Commonwealth Environment Protection and Biodiversity Conservation Act 1999 and the ACT Nat ...
- California State University
... the peak settlement season to minimize post-recruitment mortality (see Caley et al. 1996 for the importance of doing so). This resulted in different sampling methods being most suitable for these two species. We counted recruits of F. vesiculosus in August 1997 following the peak period of recruitme ...
... the peak settlement season to minimize post-recruitment mortality (see Caley et al. 1996 for the importance of doing so). This resulted in different sampling methods being most suitable for these two species. We counted recruits of F. vesiculosus in August 1997 following the peak period of recruitme ...
Activity patterns and foraging behavior of the endangered Grand Cyclura lewisi R
... ABSTRACT.—The historic rarity of the critically endangered Grand Cayman blue iguana, Cyclura lewisi, has prevented detailed research on this species prior to this decade. This study primarily used focal animal observations, transect sweeps, and radio-telemetry to document the behavioral ecology of a ...
... ABSTRACT.—The historic rarity of the critically endangered Grand Cayman blue iguana, Cyclura lewisi, has prevented detailed research on this species prior to this decade. This study primarily used focal animal observations, transect sweeps, and radio-telemetry to document the behavioral ecology of a ...
Imperfect Mimicry and the Limits of Natural Selection
... mimicry. According to this hypothesis, imperfect Batesian mimics could evolve to become better mimics, but their models are also under selection to evolve away from them to avoid the fitness cost of having a “parasitic” mimic. As a result of such “chaseaway” selection, mimics lag behind models in ph ...
... mimicry. According to this hypothesis, imperfect Batesian mimics could evolve to become better mimics, but their models are also under selection to evolve away from them to avoid the fitness cost of having a “parasitic” mimic. As a result of such “chaseaway” selection, mimics lag behind models in ph ...
MAPPING THE SPATIAL CONFIGURATION AND SEVERITY OF
... lameness making adult giraffes particularly vulnerable to lion predation (Anon, 2012; Epaphras et al., 2012). However, detailed analyses of these processes have yet to occur. In the past 30 years, the number of giraffes has plummeted by ~40% to an estimated 90,000 free-ranging giraffe and according ...
... lameness making adult giraffes particularly vulnerable to lion predation (Anon, 2012; Epaphras et al., 2012). However, detailed analyses of these processes have yet to occur. In the past 30 years, the number of giraffes has plummeted by ~40% to an estimated 90,000 free-ranging giraffe and according ...