Leopard (Panthera pardus) status, distribution, and the research
... attributable to habitat productivity (Macdonald & Loveridge, 2010). Such a broad spread makes reliably estimating population numbers from known geographic ranges particularly difficult. Robust estimates of distribution, population size, and threat require greater levels of research. Although they a ...
... attributable to habitat productivity (Macdonald & Loveridge, 2010). Such a broad spread makes reliably estimating population numbers from known geographic ranges particularly difficult. Robust estimates of distribution, population size, and threat require greater levels of research. Although they a ...
To feed or not to feed?
... an increase in the availability of food resources would lead to improved body condition and consequently increased survival and reproductive rates (Bayliss and Choquenot 2002). Indeed these are the intended effects of many supplementary feeding programs (Table 1). Despite this, Putman and Staines (2 ...
... an increase in the availability of food resources would lead to improved body condition and consequently increased survival and reproductive rates (Bayliss and Choquenot 2002). Indeed these are the intended effects of many supplementary feeding programs (Table 1). Despite this, Putman and Staines (2 ...
Habitat use and movement patterns of the Northern
... CHAPTER ONE: GENERAL INTRODUCTION AND BACKGROUND An understanding of where animals are found, and why, is central to the study of wildlife ecology. The habitat or environment that an animal occupies and with which it interacts shapes the animal’s ecology and has evolutionary consequences. Habitat, ...
... CHAPTER ONE: GENERAL INTRODUCTION AND BACKGROUND An understanding of where animals are found, and why, is central to the study of wildlife ecology. The habitat or environment that an animal occupies and with which it interacts shapes the animal’s ecology and has evolutionary consequences. Habitat, ...
- Wiley Online Library
... ingestion of the larger tadpoles (enhanced acquisition of the resource) (Kishida et al. 2009). In this case, the predator-induced bulgy body induces a novel morphology in the predator. These examples conform to theoretical expectations, which hold that the particular external cues that trigger an en ...
... ingestion of the larger tadpoles (enhanced acquisition of the resource) (Kishida et al. 2009). In this case, the predator-induced bulgy body induces a novel morphology in the predator. These examples conform to theoretical expectations, which hold that the particular external cues that trigger an en ...
Predation in Sea Urchins
... To see whether or not this was an isolated case, another aquarium was set up, containing a single Diadema, several individuals of Lytechinus, and a new urchin, Echinometra lucunter (Linnaeus). None of the animals in this aquarium was fed during the period of observation. Diadema I, the original Diad ...
... To see whether or not this was an isolated case, another aquarium was set up, containing a single Diadema, several individuals of Lytechinus, and a new urchin, Echinometra lucunter (Linnaeus). None of the animals in this aquarium was fed during the period of observation. Diadema I, the original Diad ...
rocky shore snails as material for projects (with a key for their
... Some 270 species of marine snail (Phylum Mollusca, Class Gastropoda; Sub-Class Prosobranchia) live in the seas around the British Isles (Graham, 1988) and their empty shells may be found on many beaches. Most of these species are small (less than 3 mm long) or live beneath the tidemarks. The key, ov ...
... Some 270 species of marine snail (Phylum Mollusca, Class Gastropoda; Sub-Class Prosobranchia) live in the seas around the British Isles (Graham, 1988) and their empty shells may be found on many beaches. Most of these species are small (less than 3 mm long) or live beneath the tidemarks. The key, ov ...
Effects of physical disturbance and habitat
... Disturbance is a key factor regulating the structure and functioning of natural communities and causing spatial and temporal heterogeneity (Sousa 1984, Pickett & White 1985, Whitlatch et al. 1998, Zajac et al. 1998, Widdicombe & Austen 2001, Dernie et al. 2003). There are different definitions of di ...
... Disturbance is a key factor regulating the structure and functioning of natural communities and causing spatial and temporal heterogeneity (Sousa 1984, Pickett & White 1985, Whitlatch et al. 1998, Zajac et al. 1998, Widdicombe & Austen 2001, Dernie et al. 2003). There are different definitions of di ...
Blackfordia virginica: The Black Sea Jellyfish
... through the ocean (Lo et al 2008), which can, naturally, be detrimental to photosynthetic organisms, or other organisms that rely heavily on light for survival. Although the polyp stage does not have the potential for the large scale environmental impacts of the medusa stage, the polyp stage has bee ...
... through the ocean (Lo et al 2008), which can, naturally, be detrimental to photosynthetic organisms, or other organisms that rely heavily on light for survival. Although the polyp stage does not have the potential for the large scale environmental impacts of the medusa stage, the polyp stage has bee ...
Competition and locomotion in a free-living
... species. First, they appear to survive storm-generated abrasion better than do cooccurring colonial corals (Jokiel & Cowdin, 1976). Second, members of the more mobile Fungia species also actively locomote (Abe, 1939), and thus could avoid overgrowth by moving away from other corals and into unoccupi ...
... species. First, they appear to survive storm-generated abrasion better than do cooccurring colonial corals (Jokiel & Cowdin, 1976). Second, members of the more mobile Fungia species also actively locomote (Abe, 1939), and thus could avoid overgrowth by moving away from other corals and into unoccupi ...
J. John Sepkoski, Jr.
... bottom waters, for example, Chesapeake Bay and midAtlantic coastal waters. Oxygen depletion is often quite variable on an innerannual basis and moderated by meteorological forcing. Thus, the occurrence and extent of oxygen depletion are complicated and not simply predictable as a function of nutrien ...
... bottom waters, for example, Chesapeake Bay and midAtlantic coastal waters. Oxygen depletion is often quite variable on an innerannual basis and moderated by meteorological forcing. Thus, the occurrence and extent of oxygen depletion are complicated and not simply predictable as a function of nutrien ...
Invertebrate herbivory, plant diversity and ecosystem processes in
... mentally studied without a look back on their (2004) have estimated that within the last 40 years geological past. Only then will we be able to in- 28% of native plants, 54 % of native birds, and vestigate patterns and processes in present-day 71% of native butterflies had decreased in abunbiodivers ...
... mentally studied without a look back on their (2004) have estimated that within the last 40 years geological past. Only then will we be able to in- 28% of native plants, 54 % of native birds, and vestigate patterns and processes in present-day 71% of native butterflies had decreased in abunbiodivers ...
Ecological Character Description of the Eighty Mile
... which if interrupted or prevented from occurring may threaten long-term conservation of the species. (Ramsar Convention 2005). is the combination of the ecosystem components, processes and benefits/services that characterise the wetland at a given point in time. the complex of living communities (in ...
... which if interrupted or prevented from occurring may threaten long-term conservation of the species. (Ramsar Convention 2005). is the combination of the ecosystem components, processes and benefits/services that characterise the wetland at a given point in time. the complex of living communities (in ...
Analysis of spatial and temporal variability in interactions among
... consistency in the temporal patterns of algal recovery in this hab~tat.Removal of the algal turfs had no effect on the length of fronds of C. compressa; no effect was observed on its coverage but this result was probably confounded by artifacts. In contrast, mussels had both positive and negatlve ef ...
... consistency in the temporal patterns of algal recovery in this hab~tat.Removal of the algal turfs had no effect on the length of fronds of C. compressa; no effect was observed on its coverage but this result was probably confounded by artifacts. In contrast, mussels had both positive and negatlve ef ...
(Mya arenaria) and eastern oysters (Crassostrea virginica)
... FOOD (ADAPTED FROM WILDISH AND KRISTMANSON, 1997). ................................................................ 15 ...
... FOOD (ADAPTED FROM WILDISH AND KRISTMANSON, 1997). ................................................................ 15 ...
Abstract book
... of bacteria in hydrocarbon pollution 16:00 Toby Fountain: Genotyping museum samples from extinct vs extant populations to investigate the population history of the Glanville fritillary butterfly in the Baltic region 16:15 Tommi Nyman: Phylogenetic insights into factors structuring associations be ...
... of bacteria in hydrocarbon pollution 16:00 Toby Fountain: Genotyping museum samples from extinct vs extant populations to investigate the population history of the Glanville fritillary butterfly in the Baltic region 16:15 Tommi Nyman: Phylogenetic insights into factors structuring associations be ...
Knowlton and Jackson - Smithsonian Tropical Research Institute
... zooxanthellae exhibit substantial genetic and ecological diversity, not only with respect to the hosts with which they associate (Trench 1987; Rowan 1998), but also with respect to other ecological factors such as ambient light levels (Rowan 1998).The discovery that even single coral colonies may ho ...
... zooxanthellae exhibit substantial genetic and ecological diversity, not only with respect to the hosts with which they associate (Trench 1987; Rowan 1998), but also with respect to other ecological factors such as ambient light levels (Rowan 1998).The discovery that even single coral colonies may ho ...
BREEDING LESSER BLACK-BACKED GULLS LARUS GRAELLSII
... Gulls in the colony mainly varied with season and time of day, those of Herring Gulls with tide and season. Numbers of Herring Gulls commuting to the open sea roughly equalled those commuting to the Wadden Sea. Lesser Black-backed Gulls generally flew to the open sea but hardly towards the Wadden Se ...
... Gulls in the colony mainly varied with season and time of day, those of Herring Gulls with tide and season. Numbers of Herring Gulls commuting to the open sea roughly equalled those commuting to the Wadden Sea. Lesser Black-backed Gulls generally flew to the open sea but hardly towards the Wadden Se ...
View Chapter 11. Strategy for Stabilization of the OIP Target Plant Taxa
... When a large and healthy source population is available, it is generally wise to use a variety of individuals from a single source for reintroduction. For such a population, it can be assumed that genetic problems such as inbreeding are not manifested and will likely produce a genetically healthy re ...
... When a large and healthy source population is available, it is generally wise to use a variety of individuals from a single source for reintroduction. For such a population, it can be assumed that genetic problems such as inbreeding are not manifested and will likely produce a genetically healthy re ...
Marco-Mendez, C., L. M. Ferrero-Vicente, P. Prado, K. L. Heck, J
... Sarpa salpa, on Posidonia oceanica and Cymodocea nodosa and (2) elucidate the role of epiphytes in herbivore choices. We assessed consumption rates by tethering seagrass shoots, and preferences by food choice experiments with the following paired combinations: 1) Epiphytized leaves of both C. nodosa ...
... Sarpa salpa, on Posidonia oceanica and Cymodocea nodosa and (2) elucidate the role of epiphytes in herbivore choices. We assessed consumption rates by tethering seagrass shoots, and preferences by food choice experiments with the following paired combinations: 1) Epiphytized leaves of both C. nodosa ...
Theoretical ecology
Theoretical ecology is the scientific discipline devoted to the study of ecological systems using theoretical methods such as simple conceptual models, mathematical models, computational simulations, and advanced data analysis. Effective models improve understanding of the natural world by revealing how the dynamics of species populations are often based on fundamental biological conditions and processes. Further, the field aims to unify a diverse range of empirical observations by assuming that common, mechanistic processes generate observable phenomena across species and ecological environments. Based on biologically realistic assumptions, theoretical ecologists are able to uncover novel, non-intuitive insights about natural processes. Theoretical results are often verified by empirical and observational studies, revealing the power of theoretical methods in both predicting and understanding the noisy, diverse biological world.The field is broad and includes foundations in applied mathematics, computer science, biology, statistical physics, genetics, chemistry, evolution, and conservation biology. Theoretical ecology aims to explain a diverse range of phenomena in the life sciences, such as population growth and dynamics, fisheries, competition, evolutionary theory, epidemiology, animal behavior and group dynamics, food webs, ecosystems, spatial ecology, and the effects of climate change.Theoretical ecology has further benefited from the advent of fast computing power, allowing the analysis and visualization of large-scale computational simulations of ecological phenomena. Importantly, these modern tools provide quantitative predictions about the effects of human induced environmental change on a diverse variety of ecological phenomena, such as: species invasions, climate change, the effect of fishing and hunting on food network stability, and the global carbon cycle.