A new hypothesis to explain the coexistence of n species in the
... This paper presents a hypothesis allowing us to explain the coexistence of several species (here micro-organisms) in competition on a single resource (called a substrate) in a chemostat. We introduce a new class of kinetics that does not only depend on the substrate concentration in the medium, but ...
... This paper presents a hypothesis allowing us to explain the coexistence of several species (here micro-organisms) in competition on a single resource (called a substrate) in a chemostat. We introduce a new class of kinetics that does not only depend on the substrate concentration in the medium, but ...
28.3 What Are The Effects Of Predator–Prey Interactions?
... easiest to eat, thereby leaving behind individuals with better defenses against predation, which in turn survive longer and leave more offspring. • The interacting web of life that forms a community tends to maintain a balance between resources and the number of individuals consuming them. • This ba ...
... easiest to eat, thereby leaving behind individuals with better defenses against predation, which in turn survive longer and leave more offspring. • The interacting web of life that forms a community tends to maintain a balance between resources and the number of individuals consuming them. • This ba ...
Varanus acanthurus. Photo by Jeff Lemm.
... nocturnal species or those in cold temperate regions, may be little affected by climate warming but many others such as thermoconformer species in tropical forests and live bearers appear to be particularly vulnerable. The 2011 IUCN Red List of Threatened Species lists 12 lizard species as extinct a ...
... nocturnal species or those in cold temperate regions, may be little affected by climate warming but many others such as thermoconformer species in tropical forests and live bearers appear to be particularly vulnerable. The 2011 IUCN Red List of Threatened Species lists 12 lizard species as extinct a ...
Shorebirds in Tasmania - Tasmania Parks and Wildlife Service
... clutches of up to 4 eggs. The nest is often no more than a shallow scrape in shingle or sand. Eggs are typically more pointed than those of other birds so they are less likely to roll away. The eggs and chicks are extremely well camouflaged as the parents cannot guard them all of the time. In most s ...
... clutches of up to 4 eggs. The nest is often no more than a shallow scrape in shingle or sand. Eggs are typically more pointed than those of other birds so they are less likely to roll away. The eggs and chicks are extremely well camouflaged as the parents cannot guard them all of the time. In most s ...
LAX Dunes Preserve - Los Angeles World Airports
... to a visionary and aggressive restoration project by Los Angeles World Airports (LAWA). Background & Overview The El Segundo Blue Butterfly (Euphilotes battoides allyni) was placed on the U.S. Fish and Wildlife Service’s Endangered Species List on June 1, 1976. LAWA began the LAX Dunes Restoration P ...
... to a visionary and aggressive restoration project by Los Angeles World Airports (LAWA). Background & Overview The El Segundo Blue Butterfly (Euphilotes battoides allyni) was placed on the U.S. Fish and Wildlife Service’s Endangered Species List on June 1, 1976. LAWA began the LAX Dunes Restoration P ...
The Theoretical Role of Predators in Sterile
... proposed releasing both the cyclamen mite and its predator so that an early equilibrium could be reached with a consequent reduction of the damage done by the former. Birch (1963) has recently reviewed the use of ecological methods in pest control. The present paper considers the theoretical interre ...
... proposed releasing both the cyclamen mite and its predator so that an early equilibrium could be reached with a consequent reduction of the damage done by the former. Birch (1963) has recently reviewed the use of ecological methods in pest control. The present paper considers the theoretical interre ...
Global exchange and accumulation of non
... of naturalized species with area (Fig. 2). Therefore, our data provide the first global test illustrating that oceanic islands harbour more nat uralized alien plants than similarly sized mainland regions, a phenom enon that is attributed to the available niche space not being saturated by native spe ...
... of naturalized species with area (Fig. 2). Therefore, our data provide the first global test illustrating that oceanic islands harbour more nat uralized alien plants than similarly sized mainland regions, a phenom enon that is attributed to the available niche space not being saturated by native spe ...
Impact of Alien Plants on Hawaii`s Native Biota
... disturbed or undisturbed native communities. Several species that may be considered beneficial by agronomists or horticulturists as forage, ornamentals, or for timber are included in this listing because of their negative impact in native Hawaiian ecosystems. TERMINOLOGY Six terms (adventive, alien, ...
... disturbed or undisturbed native communities. Several species that may be considered beneficial by agronomists or horticulturists as forage, ornamentals, or for timber are included in this listing because of their negative impact in native Hawaiian ecosystems. TERMINOLOGY Six terms (adventive, alien, ...
threatened plants of canterbury including a revised species list
... tedious task checking the accuracy of these names and I have not been absolutely thorough in doing this. I have detected some errors, but stress that it is the responsibility of authors to carefully check that their species lists are accurate. Authors also vary in their use or acceptance of recent n ...
... tedious task checking the accuracy of these names and I have not been absolutely thorough in doing this. I have detected some errors, but stress that it is the responsibility of authors to carefully check that their species lists are accurate. Authors also vary in their use or acceptance of recent n ...
Assessing the origin of Neotropical mountain dung
... where a is the total number of species or genera that occur in any pair of adjacent sites along a transect, and b and c are the number of exclusive species or genera (those that occur in each site but not in the adjacent one). This index was selected from the large number of beta-diversity measures ...
... where a is the total number of species or genera that occur in any pair of adjacent sites along a transect, and b and c are the number of exclusive species or genera (those that occur in each site but not in the adjacent one). This index was selected from the large number of beta-diversity measures ...
Origin and History of the Present Rodent Fauna in Poland Based on
... thought to have been mainly accumulated by owls as pellets. Studies of food composition of owls show some differences in periods of high density of rodents and under condition of prey deficiency. Also, it has been shown that the dissimilarity of food composition for particular owl species is greatly ...
... thought to have been mainly accumulated by owls as pellets. Studies of food composition of owls show some differences in periods of high density of rodents and under condition of prey deficiency. Also, it has been shown that the dissimilarity of food composition for particular owl species is greatly ...
importance of wetlands to endangered and threatened species
... dependent on wetlands. The slackwater darter, Etheostoma boschungi (Wall and Williams, 1974), a small (50-60 mm) colorful fish of northern Alabama and southern Tennessee, inhabits small to moderate-sized creeks (up to 12-m wide and 2-m deep), typically with slow current most of the year, but depends ...
... dependent on wetlands. The slackwater darter, Etheostoma boschungi (Wall and Williams, 1974), a small (50-60 mm) colorful fish of northern Alabama and southern Tennessee, inhabits small to moderate-sized creeks (up to 12-m wide and 2-m deep), typically with slow current most of the year, but depends ...
BIODIVERSITY CONSERVATION
... Biodiversity refers to the variety of all forms of life on earth, including the different plants, animals, micro-organisms, the genes they contain and the ecosystem they form. It is considered at three main levels including species diversity, genetic diversity and ecosystem diversity. Relative to th ...
... Biodiversity refers to the variety of all forms of life on earth, including the different plants, animals, micro-organisms, the genes they contain and the ecosystem they form. It is considered at three main levels including species diversity, genetic diversity and ecosystem diversity. Relative to th ...
17 Ecosystem change and resiliency
... likely to recover from a major disturbance. The level of resilience depends on several important factors, one of which is the native biodiversity within and surrounding the disturbed area. Because different species occupy different habitats and perform different roles within an ecosystem, the more s ...
... likely to recover from a major disturbance. The level of resilience depends on several important factors, one of which is the native biodiversity within and surrounding the disturbed area. Because different species occupy different habitats and perform different roles within an ecosystem, the more s ...
Integrated Pest Management
... Beneficial insects- predators and parasites Nematodes Naturally occurring pesticides Bt, Neem ...
... Beneficial insects- predators and parasites Nematodes Naturally occurring pesticides Bt, Neem ...
A Multispecies Overkill Simulation of the End-Pleistocene
... extinction wave at the very end of the Pleistocene (1, 2). This dramatic event, unparalleled in the deeper fossil record and unmatched in other continents at the same time, has been attributed to the direct effects of human predation: the first solid evidence of large human populations in the Americ ...
... extinction wave at the very end of the Pleistocene (1, 2). This dramatic event, unparalleled in the deeper fossil record and unmatched in other continents at the same time, has been attributed to the direct effects of human predation: the first solid evidence of large human populations in the Americ ...
Importance of Predators Glossary
... Predator, Prey, Predation – A predator is an animal or organism that survives by eating other animals or organisms, the prey. Mountain lions are predators that kill and eat deer. Whales are predators that prey on plankton. Spiders are predators whose prey can be many other insects, such as dragonfl ...
... Predator, Prey, Predation – A predator is an animal or organism that survives by eating other animals or organisms, the prey. Mountain lions are predators that kill and eat deer. Whales are predators that prey on plankton. Spiders are predators whose prey can be many other insects, such as dragonfl ...
Community structure, social organization and ecological
... change, showing intraspeciflc modification of group structure, feeding habits, reproductive strategy etc. Experimental results suggest a strong selection against "redundant" males. This research is considered a pilot study for future field work, aimed at a prediction of environmental influences on b ...
... change, showing intraspeciflc modification of group structure, feeding habits, reproductive strategy etc. Experimental results suggest a strong selection against "redundant" males. This research is considered a pilot study for future field work, aimed at a prediction of environmental influences on b ...
Squirrel Glider Facts
... NSW to northern Qld, occurring inland as far as the Grampians in Vic and Pilliga in NSW. Its population is currently in decline and its distribution extremely patchy as result of clearing for agriculture and/or urban development. What habitat remains is highly fragmented and continues to be degraded ...
... NSW to northern Qld, occurring inland as far as the Grampians in Vic and Pilliga in NSW. Its population is currently in decline and its distribution extremely patchy as result of clearing for agriculture and/or urban development. What habitat remains is highly fragmented and continues to be degraded ...
Commonwealth Funding to Help Protect Northern Quolls
... The cane toad was originally introduced to Queensland to kill pests in cane fields in the 1930s. Since then, the cane toad has spread south as far as Port Macquarie in NSW, reached Kakadu National Park in 2001 and continues to expand its range southwards and north-west. Current estimates show cane t ...
... The cane toad was originally introduced to Queensland to kill pests in cane fields in the 1930s. Since then, the cane toad has spread south as far as Port Macquarie in NSW, reached Kakadu National Park in 2001 and continues to expand its range southwards and north-west. Current estimates show cane t ...
Germination and establishment of invasive and native Impatiens
... and more shaded habitats where it comes in contact with two congeners, the native I. noli-tangere and earlier invader I. parviflora; both these species are likely to be affected by competition with I. glandulifera. A reciprocal sowing experiment was established to explore the performance and possibl ...
... and more shaded habitats where it comes in contact with two congeners, the native I. noli-tangere and earlier invader I. parviflora; both these species are likely to be affected by competition with I. glandulifera. A reciprocal sowing experiment was established to explore the performance and possibl ...
madagascar: new flights launch next month
... With Ethiopian Airlines launching a new service to Madagascar next month, reaching the world’s fourth largest island from the UK now becomes even easier. Isolated from Africa millions of years ago, Madagascar is a biodiversity hotspot – over 80% of its plant and animal species are found nowhere else ...
... With Ethiopian Airlines launching a new service to Madagascar next month, reaching the world’s fourth largest island from the UK now becomes even easier. Isolated from Africa millions of years ago, Madagascar is a biodiversity hotspot – over 80% of its plant and animal species are found nowhere else ...
Protected areas network and conservation efforts concerning
... policy has led to PAs downgrading. Therefore, the maintenance of PAs integrity is essential, as well as further investment is necessary for the creation of new reserves, avoiding species loss and reducing the extinction risk of the threatened amphibian species in the Brazilian Atlantic Forest. ...
... policy has led to PAs downgrading. Therefore, the maintenance of PAs integrity is essential, as well as further investment is necessary for the creation of new reserves, avoiding species loss and reducing the extinction risk of the threatened amphibian species in the Brazilian Atlantic Forest. ...
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.