The introduction of alien mammals into the broader Western and
... The ongoing debate on the occurrence, desirability and consequences of the introduction of alien (i.e. those species that do not occur in an area naturally) mammals into areas of South Africa (Castley et al. 2001, Cousins et al. 2010) highlights the need for a robust historical perspective on such i ...
... The ongoing debate on the occurrence, desirability and consequences of the introduction of alien (i.e. those species that do not occur in an area naturally) mammals into areas of South Africa (Castley et al. 2001, Cousins et al. 2010) highlights the need for a robust historical perspective on such i ...
Henderson_2013_POTRSB_Direct
... (b) Data analysis Fish species were classified as either core (i.e. persistent) or transient members of the community. Core species [10] were defined as present in more than 22 of 32 full years analysed (1986 was excluded from the identification of core species as only six months were sampled). As t ...
... (b) Data analysis Fish species were classified as either core (i.e. persistent) or transient members of the community. Core species [10] were defined as present in more than 22 of 32 full years analysed (1986 was excluded from the identification of core species as only six months were sampled). As t ...
SCALE INSECTS (Hemiptera, Sternorrhyncha, Coccoidea)
... exclusively on parts of ligneous plants. Euonymus scale insect [Unaspis evonymi (Comstock)] was also introduced in Poland on Japanese spindle from Italy [Łabanowski and Soika 1998]. In South Europe, this scale insect is known as a pest to many species of ornamental spindle [Kozarzhevskaya 1992]. So ...
... exclusively on parts of ligneous plants. Euonymus scale insect [Unaspis evonymi (Comstock)] was also introduced in Poland on Japanese spindle from Italy [Łabanowski and Soika 1998]. In South Europe, this scale insect is known as a pest to many species of ornamental spindle [Kozarzhevskaya 1992]. So ...
fluence benthic community assemblages in seagrass Examining how landscapes in
... likely influences the survival of infaunal invertebrates and community structure within the mudflat. Structured habitats such as seagrass beds provide refuge for intermediate predators and allow them to move more freely around estuaries, which can increase their foraging efficiency and reduce competiti ...
... likely influences the survival of infaunal invertebrates and community structure within the mudflat. Structured habitats such as seagrass beds provide refuge for intermediate predators and allow them to move more freely around estuaries, which can increase their foraging efficiency and reduce competiti ...
Ecological Role of Predators - National Wolfwatcher Coalition
... and an image of wildness that has been preserved. Management agencies should not assume that setting harvest levels based only on demographic indicators is an acceptable and easy choice for a ...
... and an image of wildness that has been preserved. Management agencies should not assume that setting harvest levels based only on demographic indicators is an acceptable and easy choice for a ...
Patterns in Ecology
... experimental manipulations is also to do science. As I and others have said repeatedly, if you doubt this, then astronomy is not a science. One more thought about patterns is worth articulating. Too often, ecologists seem obsessed with finding a single explanation for some process or pattern of inte ...
... experimental manipulations is also to do science. As I and others have said repeatedly, if you doubt this, then astronomy is not a science. One more thought about patterns is worth articulating. Too often, ecologists seem obsessed with finding a single explanation for some process or pattern of inte ...
Maintaining Water Quality while Restoring South Bay Salt Ponds to
... During periods of low DO, fish lost their natural color, increased their ventilation rate, ignored food, and often vomited food that had been consumed under the higher oxygen environment. This study suggests that values around 3 mg/L over a sizable period of the day will harm aquatic life. ...
... During periods of low DO, fish lost their natural color, increased their ventilation rate, ignored food, and often vomited food that had been consumed under the higher oxygen environment. This study suggests that values around 3 mg/L over a sizable period of the day will harm aquatic life. ...
2.4.2 Zonation and Succession
... humans is called a PLAGIOCLIMAX. This may occur for the following reasons: ...
... humans is called a PLAGIOCLIMAX. This may occur for the following reasons: ...
English - SciELO Costa Rica
... Abstract: Diversity indices, particularly the Shannon-Wiener index, have extensively been used in analyzing patterns of diversity at different geographic and ecological scales. These indices have serious conceptual and statistical problems which make comparisons of species richness or species abunda ...
... Abstract: Diversity indices, particularly the Shannon-Wiener index, have extensively been used in analyzing patterns of diversity at different geographic and ecological scales. These indices have serious conceptual and statistical problems which make comparisons of species richness or species abunda ...
61BL3313 Population and Community Ecology
... having lizards removed from 48 islands. In another example, Brown (1971) has shown that two species of chipmunk (genus Eutamias) divide the forest by altitude when they are sympatric on mountains in the Sierra Nevada range. But on several mountains, probably due to chance colonization or extinction ...
... having lizards removed from 48 islands. In another example, Brown (1971) has shown that two species of chipmunk (genus Eutamias) divide the forest by altitude when they are sympatric on mountains in the Sierra Nevada range. But on several mountains, probably due to chance colonization or extinction ...
Fulltext PDF
... various dimensions, in between the oyster shells in a colony, provide ideal shelters and habitats for a variety of larger animals to inhabit. Also, the sharp edges of the oyster shells prevent traditional fishermen from treading over the oyster-beds, thus providing security for the biofouler communi ...
... various dimensions, in between the oyster shells in a colony, provide ideal shelters and habitats for a variety of larger animals to inhabit. Also, the sharp edges of the oyster shells prevent traditional fishermen from treading over the oyster-beds, thus providing security for the biofouler communi ...
OPEN-CANOPY OAK WOODLANDS
... Douglas-fir Recruitment into Oak Woodlands: Due to thousands of years of deliberate human fire use and burning, less fire tolerant species such as Douglas-fir were kept out of large areas of woodlands now dominated by oaks. On Mt. Tam, the recent fire regime of very infrequent fires has allowed Doug ...
... Douglas-fir Recruitment into Oak Woodlands: Due to thousands of years of deliberate human fire use and burning, less fire tolerant species such as Douglas-fir were kept out of large areas of woodlands now dominated by oaks. On Mt. Tam, the recent fire regime of very infrequent fires has allowed Doug ...
Lecture: Concepts of Regeneration
... extends close to the ground • Diameters range from seedling-sapling to sawtimber sizes, regardless of species present • Trees of all diameters have a large live-crown ratio, often as high as 40 to ...
... extends close to the ground • Diameters range from seedling-sapling to sawtimber sizes, regardless of species present • Trees of all diameters have a large live-crown ratio, often as high as 40 to ...
Ecological Succession - Mr. Kim: Downey High School
... and less suitable for those present • Pioneer species are often poor competitors and are replaced by stronger competitors that have greater environmental demands • Later communities are often more complex than earlier communities ...
... and less suitable for those present • Pioneer species are often poor competitors and are replaced by stronger competitors that have greater environmental demands • Later communities are often more complex than earlier communities ...
English - Convention on Biological Diversity (CBD)
... War is often said to be one of the main drivers of environmental degradation. The Vietnam War is one such war of which the country still bears the scars. Dr. Vo Quy devised an ambitious master plan for rehabilitating 50% of the country’s forests from severe environmental devastation. This plan, unde ...
... War is often said to be one of the main drivers of environmental degradation. The Vietnam War is one such war of which the country still bears the scars. Dr. Vo Quy devised an ambitious master plan for rehabilitating 50% of the country’s forests from severe environmental devastation. This plan, unde ...
Nevada Wildlife Action Plan - Nevada Department of Wildlife
... Three important managed marsh sites occur in the White River system sustained largely by carbonate springs whose deep aquifers contain water with residence times measured in the hundreds to thousands of years – Kirch WMA near Sunnyside in the north White River Valley, Key Pittman WMA in the north Pa ...
... Three important managed marsh sites occur in the White River system sustained largely by carbonate springs whose deep aquifers contain water with residence times measured in the hundreds to thousands of years – Kirch WMA near Sunnyside in the north White River Valley, Key Pittman WMA in the north Pa ...
Succession - Worth County Schools
... • Describe how ecosystems recover from a disturbance. • Compare succession after a natural disturbance with succession after a human caused disturbance. ...
... • Describe how ecosystems recover from a disturbance. • Compare succession after a natural disturbance with succession after a human caused disturbance. ...
A Survey and Overview of Habitat Fragmentation Experiments
... Following from the theory of island biogeography (MacArthur & Wilson 1967), species richness in habitat fragments is expected to be a function of island size and degree of isolation. Smaller, more isolated fragments are expected to retain fewer species than larger, less isolated habitat tracts (Diam ...
... Following from the theory of island biogeography (MacArthur & Wilson 1967), species richness in habitat fragments is expected to be a function of island size and degree of isolation. Smaller, more isolated fragments are expected to retain fewer species than larger, less isolated habitat tracts (Diam ...
Revista de Biologia Tropical
... (Green and Anthony 1989). Roductivity, measured as young fledged, was similar in the California resident population (Thomsen 1971). but was lower than the New Mexico migratory population (Martin 1973). The hypothesis of Martin (1973) which proposes that burrowing owl migratory populations have more ...
... (Green and Anthony 1989). Roductivity, measured as young fledged, was similar in the California resident population (Thomsen 1971). but was lower than the New Mexico migratory population (Martin 1973). The hypothesis of Martin (1973) which proposes that burrowing owl migratory populations have more ...
Ecological Succession
... • Describe how ecosystems recover from a disturbance. • Compare succession after a natural disturbance with succession after a human caused disturbance. ...
... • Describe how ecosystems recover from a disturbance. • Compare succession after a natural disturbance with succession after a human caused disturbance. ...
Petrogale penicillata - profile (PDF 560 KB)
... groups or ‘colonies’each usually separated by hundreds of metres (Jarman & Bayne, 1997). A total of seven colonies make up the Warrumbungles population, each colony consisting of five to six individuals (NSW Scientific Committee). Each colony uses a number of different rocky outcrops or ‘refuges’(Ja ...
... groups or ‘colonies’each usually separated by hundreds of metres (Jarman & Bayne, 1997). A total of seven colonies make up the Warrumbungles population, each colony consisting of five to six individuals (NSW Scientific Committee). Each colony uses a number of different rocky outcrops or ‘refuges’(Ja ...
When natural habitat fails to enhance biological pest control
... scales, not just the amount of natural habitat, is a major determinant of biodiversity in agriculture (Benton et al., 2003; Schellhorn et al., 2015; but see Batáry et al., 2011). Heterogeneous landscapes with a diversity of, often intermingled, habitat types generally increase biodiversity and the s ...
... scales, not just the amount of natural habitat, is a major determinant of biodiversity in agriculture (Benton et al., 2003; Schellhorn et al., 2015; but see Batáry et al., 2011). Heterogeneous landscapes with a diversity of, often intermingled, habitat types generally increase biodiversity and the s ...
Impact of Deforestation on Adjacent Small Stream Ecosystems Katie
... Recent studies show that deforestation – on both small and large scales – has a significant impact upon the physical, chemical, and biological characteristics of adjacent small streams. In general, aquatic habitats lose heterogeneity, and this effect is mirrored among invertebrate and fish populatio ...
... Recent studies show that deforestation – on both small and large scales – has a significant impact upon the physical, chemical, and biological characteristics of adjacent small streams. In general, aquatic habitats lose heterogeneity, and this effect is mirrored among invertebrate and fish populatio ...
Workshop on the protection of the Lesser White
... per year were observed in Germany. Argues that the Fennoscandian population is genetically not different from more eastern populations. All females has only one halotype, while the males have all other neighbouring halotypes. Despite the moratiorium on release the Swedish reintroduced population is ...
... per year were observed in Germany. Argues that the Fennoscandian population is genetically not different from more eastern populations. All females has only one halotype, while the males have all other neighbouring halotypes. Despite the moratiorium on release the Swedish reintroduced population is ...
Habitat conservation
Habitat conservation is a land management practice that seeks to conserve, protect and restore habitat areas for wild plants and animals, especially conservation reliant species, and prevent their extinction, fragmentation or reduction in range. It is a priority of many groups that cannot be easily characterized in terms of any one ideology.