briefing on wild bees at risk in canada
... Nature designed distinct roles for each wild bee species to play in pollinating plants and we need them all. But they’re up against big stresses like habitat loss, climate change, pesticides and diseases. A key example is the Rusty-patched bumble bee, once abundant in southern Ontario and now almost ...
... Nature designed distinct roles for each wild bee species to play in pollinating plants and we need them all. But they’re up against big stresses like habitat loss, climate change, pesticides and diseases. A key example is the Rusty-patched bumble bee, once abundant in southern Ontario and now almost ...
Food web structure and the evolution of ecological communities
... extinction will remove some of the old ones. When a new species arises, this will have knock-on effects on other species in the community through predation and competition interactions. There is the potential for indirect effects to influence many other species. There are now a large number of evolutio ...
... extinction will remove some of the old ones. When a new species arises, this will have knock-on effects on other species in the community through predation and competition interactions. There is the potential for indirect effects to influence many other species. There are now a large number of evolutio ...
Bird Island Biodiversity Action Plan
... Bird Island provides significant habitat values for many bird species, including seabirds and waders of state, national and international conservation significance. Ten native bird species have been observed to breed on the island, with another three species considered to possibly breed there. Of th ...
... Bird Island provides significant habitat values for many bird species, including seabirds and waders of state, national and international conservation significance. Ten native bird species have been observed to breed on the island, with another three species considered to possibly breed there. Of th ...
Experimental evidence that the introduced fire ant, Solenopsis
... ants. Native species comprised a small minority (11%) of the total abundance of ants but accounted for a majority of the species (74%). The majority of both the native and the introduced species are either habitat generalists or disturbed habitat specialists in the region (J.R.K., unpublished data). ...
... ants. Native species comprised a small minority (11%) of the total abundance of ants but accounted for a majority of the species (74%). The majority of both the native and the introduced species are either habitat generalists or disturbed habitat specialists in the region (J.R.K., unpublished data). ...
Linking Community and Ecosystem Ecology (LINKECOL)
... problem internationally affecting health, agricultural potential, biodiversity, and the structure and functioning of natural ecosystems. This problem will probably become more acute with increasing global trade, global environmental change and changing land use patterns. ...
... problem internationally affecting health, agricultural potential, biodiversity, and the structure and functioning of natural ecosystems. This problem will probably become more acute with increasing global trade, global environmental change and changing land use patterns. ...
The University of Chicago
... benefitthe individualwhen individualsare organizedinto small, isolated populations. In these structureddemes, selection between populations may override selectionwithina population(Wright1969; D. S. Wilson 1980,p. 38; Leigh 1983). We distinguishoverspecializationfromotherformsof individualselection ...
... benefitthe individualwhen individualsare organizedinto small, isolated populations. In these structureddemes, selection between populations may override selectionwithina population(Wright1969; D. S. Wilson 1980,p. 38; Leigh 1983). We distinguishoverspecializationfromotherformsof individualselection ...
The feeding behaviour of an abyssal sea anemone
... Iikely to be much Iower in any case. Species using a mud bali as an anchor can presumably colonize a much Iarger area of seabed than those using a hard substrate. The advantages of active orientation must be set against the energetic costs of increased muscle activity. These costs may, however, be r ...
... Iikely to be much Iower in any case. Species using a mud bali as an anchor can presumably colonize a much Iarger area of seabed than those using a hard substrate. The advantages of active orientation must be set against the energetic costs of increased muscle activity. These costs may, however, be r ...
TOL III: Animals
... (nematodes, annelids, mollusks, arthropods and chordates represented by vertebrates) • Only the nematodes, arthropods and vertebrates have diversified extensively on ...
... (nematodes, annelids, mollusks, arthropods and chordates represented by vertebrates) • Only the nematodes, arthropods and vertebrates have diversified extensively on ...
full text
... fragmentation of pristine habitats over the past decades (further details see material and ...
... fragmentation of pristine habitats over the past decades (further details see material and ...
Biodiversity
... • Passenger pigeons became extinct primarily because of increased conversion of forested land. ...
... • Passenger pigeons became extinct primarily because of increased conversion of forested land. ...
journal 9.indb
... seedlings and young specimens had a good fitness. The highest individual of them was more then 2 m high in 2005 (Fig. 2). Their leaves, of a mean length approximately up to 15 cm, were not damaged in any visible way. European chestnut was probably spread by birds (Garrulus glandarius L.) which trans ...
... seedlings and young specimens had a good fitness. The highest individual of them was more then 2 m high in 2005 (Fig. 2). Their leaves, of a mean length approximately up to 15 cm, were not damaged in any visible way. European chestnut was probably spread by birds (Garrulus glandarius L.) which trans ...
Biol. 4974/5974 Evolution Lecture #1
... •Examples from pigeon breeding. •The power of selective breeding. Chapter II: Variation under Nature •Individual variation exists as well within and among ...
... •Examples from pigeon breeding. •The power of selective breeding. Chapter II: Variation under Nature •Individual variation exists as well within and among ...
A Critical Appraisal of the Legal Regime for Biodiversity
... conservation organizations published a Red list of species in danger of extinction around the world. The IUCN also advises governments on ways to manage their natural resources and works with groups like the World Wildlife Fund to sponsor conservation projects. The Nigerian Conservation Foundation h ...
... conservation organizations published a Red list of species in danger of extinction around the world. The IUCN also advises governments on ways to manage their natural resources and works with groups like the World Wildlife Fund to sponsor conservation projects. The Nigerian Conservation Foundation h ...
Predation, etc.
... Exploitation (Predation, etc.) Definitions of each are problematic---Common to all interactions: One organism living at the expense of another. ...
... Exploitation (Predation, etc.) Definitions of each are problematic---Common to all interactions: One organism living at the expense of another. ...
maritime chaparral
... conditions, largely mediated by the fire cycle. Removal of fire as a key ecosystem process is resulting in the successional reduction of grasslands, chaparral, and oak woodlands. Chaparral is adapted to fire return intervals from about 30 to 150 years, and requires periodic fire to regenerate. Fores ...
... conditions, largely mediated by the fire cycle. Removal of fire as a key ecosystem process is resulting in the successional reduction of grasslands, chaparral, and oak woodlands. Chaparral is adapted to fire return intervals from about 30 to 150 years, and requires periodic fire to regenerate. Fores ...
Existence and construction of large stable food webs
... interaction strengths, a manifestation of the principle of trade-offs [7, 8, 9]. ...
... interaction strengths, a manifestation of the principle of trade-offs [7, 8, 9]. ...
Limitations on reproductive success in endemic Aquilegia
... counted the flower number at the first visit (including flower buds larger than 1 cm). During the rest of the experiment, each flower producing a normally developed fruit was recorded, to calculate the fruit/flower ratio. At the end of fruit maturation, three to five ripe fruits were randomly harvested on ...
... counted the flower number at the first visit (including flower buds larger than 1 cm). During the rest of the experiment, each flower producing a normally developed fruit was recorded, to calculate the fruit/flower ratio. At the end of fruit maturation, three to five ripe fruits were randomly harvested on ...
Of Rats and Men - Annenberg Learner
... birds took their place. Thus the Galápagos have giant tortoise and New Zealand once had giant birds that functioned more or less like browsing or grazing mammals. Throughout most of the Pacific, the paucity of grazing animals meant that plants developed no defenses, such as spines, poisonous alkaloi ...
... birds took their place. Thus the Galápagos have giant tortoise and New Zealand once had giant birds that functioned more or less like browsing or grazing mammals. Throughout most of the Pacific, the paucity of grazing animals meant that plants developed no defenses, such as spines, poisonous alkaloi ...
Barna Mia - Trails WA
... The rufous hare-wallaby or mala (Lagorchestes hirsutus) is a small, delicate marsupial with light-fawn coloured fur. When disturbed, it springs from its shelter and quickly bounds away in a zigzag motion. The mala is a herbivore. By the early 1990s the last two wild populations had become extinct on ...
... The rufous hare-wallaby or mala (Lagorchestes hirsutus) is a small, delicate marsupial with light-fawn coloured fur. When disturbed, it springs from its shelter and quickly bounds away in a zigzag motion. The mala is a herbivore. By the early 1990s the last two wild populations had become extinct on ...
A conceptual framework for marine biodiversity and ecosystem
... selection dealt with the effects of environmental forces upon the species, whereas Darwin’s most popular contemporary follower, Ernst Haeckel, with his ‘biogenetic law’, put evolution into a developmental framework. It is telling that neither ecology nor developmental biology took part in the modern ...
... selection dealt with the effects of environmental forces upon the species, whereas Darwin’s most popular contemporary follower, Ernst Haeckel, with his ‘biogenetic law’, put evolution into a developmental framework. It is telling that neither ecology nor developmental biology took part in the modern ...
Attach 2 – Environmental Assessment
... Notably several specific investigations into the existing environment within the vicinity of the site have been undertaken in recent times. This is identical to the statement made on page 14 of the 2007 EAR and the list which follows is absolutely identical in both reports. Again in the list at 3.1 ...
... Notably several specific investigations into the existing environment within the vicinity of the site have been undertaken in recent times. This is identical to the statement made on page 14 of the 2007 EAR and the list which follows is absolutely identical in both reports. Again in the list at 3.1 ...
Society for Conservation Biology The Wildlife Society
... federally listed species in the Florida Keys National Wildlife Refuges such as the Lower Keys marsh rabbit (Sylvilagus palustris hefneri), Key Largo woodrat (Neotoma floridana smalli) and the Key Largo cotton mouse (Peromyscus gossypinus allapaticola). 5 At present, control methods for invasive fera ...
... federally listed species in the Florida Keys National Wildlife Refuges such as the Lower Keys marsh rabbit (Sylvilagus palustris hefneri), Key Largo woodrat (Neotoma floridana smalli) and the Key Largo cotton mouse (Peromyscus gossypinus allapaticola). 5 At present, control methods for invasive fera ...
Selecting umbrella species for conservation
... occupying similar habitats. We examine which of these species could, theoretically, offer the largest conservation benefit for other species (i.e., be the most effective and efficient candidate for an umbrella species) by quantifying both the degree of spatial co-occurrence, as well as the niche overl ...
... occupying similar habitats. We examine which of these species could, theoretically, offer the largest conservation benefit for other species (i.e., be the most effective and efficient candidate for an umbrella species) by quantifying both the degree of spatial co-occurrence, as well as the niche overl ...
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.