Basic and Applied Ecology
... A current goal in ecology is to elucidate the relative roles of primary and secondary consumers versus plant resources in determining community structure and dynamics. The complexity and diversity of terrestrial communities has been hypothesized to strongly influence the strength of these topdown an ...
... A current goal in ecology is to elucidate the relative roles of primary and secondary consumers versus plant resources in determining community structure and dynamics. The complexity and diversity of terrestrial communities has been hypothesized to strongly influence the strength of these topdown an ...
Habitat associations of juvenile versus adult butterflyfishes
... 1985; Roberts et al. 1992). Further, declines in coral cover caused by acute disturbance events (e.g., cyclones, coral bleaching, or outbreaks of coral predators) often lead to significant declines in the abundance of coral-feeding butterflyfishes (Bouchon-Navaro et al. 1985; Williams 1986; Pratchet ...
... 1985; Roberts et al. 1992). Further, declines in coral cover caused by acute disturbance events (e.g., cyclones, coral bleaching, or outbreaks of coral predators) often lead to significant declines in the abundance of coral-feeding butterflyfishes (Bouchon-Navaro et al. 1985; Williams 1986; Pratchet ...
Master thesis for master Environmental Biology at Utrecht University
... European bats are aerial hawkers (Dietz et al., 2011). When hunting close to vegetation, echoes from the vegetation will overlap the echoes coming from the prey, making it more difficult to localize prey. Horseshoe bats (Rhinolophidae) have solved this problem by specifically recognizing the wing-st ...
... European bats are aerial hawkers (Dietz et al., 2011). When hunting close to vegetation, echoes from the vegetation will overlap the echoes coming from the prey, making it more difficult to localize prey. Horseshoe bats (Rhinolophidae) have solved this problem by specifically recognizing the wing-st ...
Potential Impacts of a Western Pacific Grapsid Crab on Intertidal
... grapsid crab, Hemigrapsus sanguineus, that was recently introduced to the mid-Atlantic coast of North America. Seasonal abundance on a boulder/cobble shore (Crane Neck Pt.) in central Long Island Sound, New York, USA, during 1997–1998, ranged from 7 to 10 crabs m−2 averaged over the entire intertida ...
... grapsid crab, Hemigrapsus sanguineus, that was recently introduced to the mid-Atlantic coast of North America. Seasonal abundance on a boulder/cobble shore (Crane Neck Pt.) in central Long Island Sound, New York, USA, during 1997–1998, ranged from 7 to 10 crabs m−2 averaged over the entire intertida ...
Battle Creek Integrated Weed Management Plan
... priorities and for identifying effective management actions and for future decision making and course correction. Finally, the plan presents specific management strategies for individual plant species. Throughout the array of landscapes within the Battle Creek Watershed, invasive plants have varying ...
... priorities and for identifying effective management actions and for future decision making and course correction. Finally, the plan presents specific management strategies for individual plant species. Throughout the array of landscapes within the Battle Creek Watershed, invasive plants have varying ...
Larval Release Rhythms of Decapod Crustaceans
... In most other cases, larval release occurs in the first few hours of the night phase (Table 3). This timing is not related to adult habitat, since it is common among species living in sublittoral, littoral and supralittoral areas (Table 2). Tidal rhythms in larval release occur among supralittoral, ...
... In most other cases, larval release occurs in the first few hours of the night phase (Table 3). This timing is not related to adult habitat, since it is common among species living in sublittoral, littoral and supralittoral areas (Table 2). Tidal rhythms in larval release occur among supralittoral, ...
4 Fish, Crayfish and Macroinvertebrates in ACT Rivers
... threatened under ACT legislation, as well as in other jurisdictions. Murray Cod has recently been listed as vulnerable under the Environment Protection and Biodiversity Conservation Act 1999 (Cwlth) but is not declared in the ACT (Table 4.1). The following sections 4.4 to 4.7 discuss those factors c ...
... threatened under ACT legislation, as well as in other jurisdictions. Murray Cod has recently been listed as vulnerable under the Environment Protection and Biodiversity Conservation Act 1999 (Cwlth) but is not declared in the ACT (Table 4.1). The following sections 4.4 to 4.7 discuss those factors c ...
Northern Goshawk,Accipiter gentilis laingi
... risk of extirpation, therefore, is overly conservative (see Fluctuations and Trends). Threats (actual or imminent, to populations or habitats) Forest harvesting and other commercial-scale activities that remove trees can impact nest sites and prey abundance at both the stand and landscape levels, by ...
... risk of extirpation, therefore, is overly conservative (see Fluctuations and Trends). Threats (actual or imminent, to populations or habitats) Forest harvesting and other commercial-scale activities that remove trees can impact nest sites and prey abundance at both the stand and landscape levels, by ...
relation between filtering rate, temperature, and body size in four
... magna and D. galeata increased with increasing temperatures over the range studied. At 25C, the mean filtering rates of these two species were two to three times higher than their rates at 15C ( Q10, Table 2). Results for D. magna accord well with those obtained by McMahon (1965) who found filtering ...
... magna and D. galeata increased with increasing temperatures over the range studied. At 25C, the mean filtering rates of these two species were two to three times higher than their rates at 15C ( Q10, Table 2). Results for D. magna accord well with those obtained by McMahon (1965) who found filtering ...
2010 Darwin Conference - Australasian Bat Society
... habitat use and most habitat models are based on presence-only records that span many years. This is particularly the case for rarely captured species such as Mormopterus norfolkensis (listed as Vulnerable under NSW Threatened Conservation Act 1995). The aim of the study is to determine what factors ...
... habitat use and most habitat models are based on presence-only records that span many years. This is particularly the case for rarely captured species such as Mormopterus norfolkensis (listed as Vulnerable under NSW Threatened Conservation Act 1995). The aim of the study is to determine what factors ...
microhabitat use of deer mice: effects of
... Microhabitat use by deer mice (Peromyscus maniculatus) was tested under five different simulated moonlight intensities, using an indoor habitat chamber with shrub covered areas and open areas, and food sources. Tests were run in the presence and absence of a potential competitor, Ord's kangaroo rat ...
... Microhabitat use by deer mice (Peromyscus maniculatus) was tested under five different simulated moonlight intensities, using an indoor habitat chamber with shrub covered areas and open areas, and food sources. Tests were run in the presence and absence of a potential competitor, Ord's kangaroo rat ...
Southern bell frog - draft recovery plan
... The species is listed as “endangered” in New South Wales under the Threatened Species Conservation Act, 1995. It is also listed nationally as “vulnerable” under the Environment Protection and Biodiversity Conservation Act, 1999. Suspected threats to the Southern Bell Frog include loss or fragmentati ...
... The species is listed as “endangered” in New South Wales under the Threatened Species Conservation Act, 1995. It is also listed nationally as “vulnerable” under the Environment Protection and Biodiversity Conservation Act, 1999. Suspected threats to the Southern Bell Frog include loss or fragmentati ...
Do we have a consistent terminology for species diversity?
... Communicated by Scott Collins. R. Gorelick (&) Department of Biology and School of Mathematics and Statistics, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada e-mail: [email protected] ...
... Communicated by Scott Collins. R. Gorelick (&) Department of Biology and School of Mathematics and Statistics, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6, Canada e-mail: [email protected] ...
measuring ecological niche overlap from occurrence - Serval
... of Ecology and Evolution, University of Lausanne, Switzerland – M. Fitzpatrick, University of Maryland Center for Environmental Science, Appalachian Lab, Frostburg, USA. – P. Pearman and N. Zimmermann, Swiss Federal Research Inst. WSL, Birmensdorf, Switzerland – N.G. Yoccoz, Dept. of Arctic and Mari ...
... of Ecology and Evolution, University of Lausanne, Switzerland – M. Fitzpatrick, University of Maryland Center for Environmental Science, Appalachian Lab, Frostburg, USA. – P. Pearman and N. Zimmermann, Swiss Federal Research Inst. WSL, Birmensdorf, Switzerland – N.G. Yoccoz, Dept. of Arctic and Mari ...
HABITAT - Outdoor Alabama
... provide excellent escape cover to protect quail from predators during winter months. These days it is hard to find any such fencerows, as managers and farmers have cleaned up their fields or replaced fencerows with mature trees that don’t offer adequate cover. Providing ample cover for nesting, broo ...
... provide excellent escape cover to protect quail from predators during winter months. These days it is hard to find any such fencerows, as managers and farmers have cleaned up their fields or replaced fencerows with mature trees that don’t offer adequate cover. Providing ample cover for nesting, broo ...
Garry Oak Ecosystems - Province of British Columbia
... to know about the past role of fire. To and collecting and growing acorns. This all the major ecosystems. The Conservation Data Centre, a maintain the ecosystems, we need to program results in real conservation develop strategies that use prescribed gains by reducing water use, pesticide provincial ...
... to know about the past role of fire. To and collecting and growing acorns. This all the major ecosystems. The Conservation Data Centre, a maintain the ecosystems, we need to program results in real conservation develop strategies that use prescribed gains by reducing water use, pesticide provincial ...
Energy budget and ecological role of mangrove epibenthos in the
... ABSTRACT: Epibenthic community structure, somatic production and energy flow were studied in the Caeté mangrove estuary in North Brazil on for 3 representative strata: high intertidal forest (F), small creeks in the forest (SC) and open mudbanks of large intertidal creeks (LC). Seven decapod crustac ...
... ABSTRACT: Epibenthic community structure, somatic production and energy flow were studied in the Caeté mangrove estuary in North Brazil on for 3 representative strata: high intertidal forest (F), small creeks in the forest (SC) and open mudbanks of large intertidal creeks (LC). Seven decapod crustac ...
Daphnia hybridization along ecological gradients in pelagic
... conditions for studying this phenomenon. The welldefined main reservoir tributary as a point source of nutrient input, the unidirectional flow of water down the reservoir, occasional turbidity stress from upstream sites and significantly higher affinity of fishes to upstream locations are all signif ...
... conditions for studying this phenomenon. The welldefined main reservoir tributary as a point source of nutrient input, the unidirectional flow of water down the reservoir, occasional turbidity stress from upstream sites and significantly higher affinity of fishes to upstream locations are all signif ...
International Trade and Invasive Alien Species International
... for human health, agricultural productivity and trade. The economic cost of IAS is estimated at hundreds of billions of dollars annually to economies worldwide. 2. Increasing travel, trade, and tourism have facilitated intentional and unintentional movement of species beyond natural geographical ba ...
... for human health, agricultural productivity and trade. The economic cost of IAS is estimated at hundreds of billions of dollars annually to economies worldwide. 2. Increasing travel, trade, and tourism have facilitated intentional and unintentional movement of species beyond natural geographical ba ...
Evaluating MPA effectiveness
... objectives (but see Rowley 1994, Freitas et al. 1998). There is increasing pressure for evaluation of MPA’s with respect to their intended objectives (Carr and Raimondi 1999, Murray et al. 1999). This has implications for the setting of targets – the emphasis changes from simply detecting effects, t ...
... objectives (but see Rowley 1994, Freitas et al. 1998). There is increasing pressure for evaluation of MPA’s with respect to their intended objectives (Carr and Raimondi 1999, Murray et al. 1999). This has implications for the setting of targets – the emphasis changes from simply detecting effects, t ...
Invertebrate welfare: an overlooked issue
... The ability to experience pain increases an individual’s ability to survive and reproduce [5]. The sensation of pain predicts tissue damage from noxious stimuli, which could make it a common process with similar mechanisms in varied complex biological systems [17]. However, the only way to prove tha ...
... The ability to experience pain increases an individual’s ability to survive and reproduce [5]. The sensation of pain predicts tissue damage from noxious stimuli, which could make it a common process with similar mechanisms in varied complex biological systems [17]. However, the only way to prove tha ...
IMPACTS of FERAL and FREE- RANGING CATS on BIRD SPECIES
... Areas in The United States. These areas are Scrub-Jay, and Hawaiian Petrel nest and/or feed considered high priorities for cat control to protect on the ground. These species evolved in the absence of threatened bird species. cats and other alien predators and do not have effective defenses against ...
... Areas in The United States. These areas are Scrub-Jay, and Hawaiian Petrel nest and/or feed considered high priorities for cat control to protect on the ground. These species evolved in the absence of threatened bird species. cats and other alien predators and do not have effective defenses against ...
Cats & Wildlife A Conservation Dilemma Introduction
... predators, such as bobcats, foxes, or coyotes. Second, they often have a dependable supply of supplemental food provided by humans and are, therefore, not influenced by changes in populations of prey. Whereas populations of native predators will decline when prey becomes scarce, cats receiving food ...
... predators, such as bobcats, foxes, or coyotes. Second, they often have a dependable supply of supplemental food provided by humans and are, therefore, not influenced by changes in populations of prey. Whereas populations of native predators will decline when prey becomes scarce, cats receiving food ...
Picture perception in animals: what about faces?
... functions (Bruce & Young 1998). If it can be established that all primates show similar face processing abilities that would suggest a common evolutionary route for this important ability and possibly for visual cognition more generally. In humans, pictures are used to test these skills and our know ...
... functions (Bruce & Young 1998). If it can be established that all primates show similar face processing abilities that would suggest a common evolutionary route for this important ability and possibly for visual cognition more generally. In humans, pictures are used to test these skills and our know ...
Island restoration
The ecological restoration of islands, or island restoration, is the application of the principles of ecological restoration to islands and island groups. Islands, due to their isolation, are home to many of the world's endemic species, as well as important breeding grounds for seabirds and some marine mammals. Their ecosystems are also very vulnerable to human disturbance and particularly to introduced species, due to their small size. Island groups such as New Zealand and Hawaii have undergone substantial extinctions and losses of habitat. Since the 1950s several organisations and government agencies around the world have worked to restore islands to their original states; New Zealand has used them to hold natural populations of species that would otherwise be unable to survive in the wild. The principal components of island restoration are the removal of introduced species and the reintroduction of native species.