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Key Publications - Details and Abstracts PDF, 286.38 KB
Key Publications - Details and Abstracts PDF, 286.38 KB

... Important aspects of the ecology of marine parasites are discussed. It is emphasized that host specificity and host ranges should be distinguished, and a index that permits calculation of host specificity is discussed. The same index can be applied to measure site specificity. Central problems in e ...
Why plankton communities have no equilibrium: solutions to the
Why plankton communities have no equilibrium: solutions to the

... modified. Therefore, it does not seem very likely that a four-species system like this will display chaotic behavior in the real world. It has, however, been proved that competitive interactions of five and more species can lead to any type of behavior including chaos, and that complex dynamics beco ...
Invasive Predatory Small Mammals on Islands Strategy
Invasive Predatory Small Mammals on Islands Strategy

... associated impacts on breeding birds and island biodiversity in general. This will be achieved by: Prevention of introduction - It is widely accepted that the prevention of introductions of invasive alien species is by far the most cost effective strategy in tackling invasive species. This document ...
biology - Board of Studies
biology - Board of Studies

... (A) phosphate group, sugar group, thymine, guanine. (B) thymine, guanine, phosphate group, sugar group. (C) guanine, thymine, phosphate group, sugar group. (D) sugar group, phosphate group, guanine, thymine. ...
Chapter 11 - Matters of National Environmental Significance
Chapter 11 - Matters of National Environmental Significance

... habitat for native species. Specifically, land clearing will result in a direct loss of individual plants, together with displacement of a variety of fauna species that currently use the Study Area for feeding, resting and roosting. However, it is unlikely that the proposal will compromise the long- ...
Potential 21st century changes to the mammal
Potential 21st century changes to the mammal

... immigration of seventeen new species. Only the northern birch mouse (Sicista betulina) is at risk of extinction from climate change predicted. The European native mammals are not anticipated to contribute to the invasive-species problem as they coexist with most Danish species in other parts of Euro ...
How does global change affect the strength of trophic interactions?
How does global change affect the strength of trophic interactions?

... Recent research has generally shown that a small change in the number of species in a food web can have consequences both for community structure and ecosystem processes. However ‘change’ is not limited to just the number of species in a community, but might include an alteration to such properties ...
2014 Bee Niche and N..
2014 Bee Niche and N..

... correlated with temperature, we can conclude that temperature is not a primary factor affecting patterns of temporal overlap in the community as a whole. Nonetheless, activity of particular bee populations may be affected by temperature. Dietary overlap for all abundant species as a group was not si ...
The role of competitive dominance in the invasive ability of the
The role of competitive dominance in the invasive ability of the

... aggressive, and actively defend a permanent territory containing their nests and a relatively large foraging area. Dominant species usually patrol wide areas and can have an important effect on local communities, not just of ants but also of other arthropods and plants (Hölldobler and Lumsden 1980; ...
Opportunistic exploitation - School of Environmental and Forest
Opportunistic exploitation - School of Environmental and Forest

... subject to multispecies sea cucumber fisheries they are often critically overfished [13]. Conversely, in single-species sea cucumber fisheries in Alaska, Iceland, New Zealand, British Columbia, Newfoundland and Labrador, Washington, and eastern Russia, where there are no other sea cucumber species t ...
UNIT 9 NOTES
UNIT 9 NOTES

... were the ones you were born with like skin as a barrier and stomach acid. Well, some behaviors are innate too. Innate behaviors would be those that an organism is born with, or inherited and is genetic not learned. Most insects show innate behaviors because there is no parental care. They hatch, go ...
Altitudinal zonation among lizards of the genus
Altitudinal zonation among lizards of the genus

... Our previous studies reveal that lizard parasites (ectoparasitic mites and ticks, and the endoparasite Plasmodium) do not set Liolaemus altitudinallimits. Thermal tolerances do not appear to limit altitudinal distributions, although cold ambient temperatures dictate that only live-bearing species ca ...
NOBANIS – Invasive Alien Species Fact Sheet Procyon lotor
NOBANIS – Invasive Alien Species Fact Sheet Procyon lotor

... species and ecosystems and also its social and economical effects. The result of such research should be limiting of the number and expansion and controlling of alien species especially those which are most dangerous for native biodiversity. However, there is no specific recommendation with regard t ...
Turner Sasina Research Paper Draft Env340A BROOK TROUT
Turner Sasina Research Paper Draft Env340A BROOK TROUT

... trout and this could eventually be a problem for the suggested sanctuary is in the face of ever increasing temperatures the ability of the brook trout to migrate may prove invaluable, the problem of temperature rising and conservation seems to be lacking in the EBTJV plans to help brook trout in th ...
Adaptive Radiation - Princeton University Press
Adaptive Radiation - Princeton University Press

... choice occurs as a correlated effect of adaptive divergence. A sympatric phase of the speciation process then follows the allopatric phase, when a derived species disperses into the environment of another. Coexistence in the same habitat, as described by the term sympatry, depends on ecological and ...
Non-Indigenous Species
Non-Indigenous Species

... A currently ongoing activity which is relevant to non‐indigenous species is the gathering of  data for the identification of selected marine non‐indigenous species in Malta’s five Marine  Protected Areas (MPAs) – that is in the area of Dwejra and Mgarr ix‐Xini in Gozo, the area  off the North West c ...
Biodiversity Conservation and Habitat Management: An
Biodiversity Conservation and Habitat Management: An

... microorganisms (Figure 1). Most systematists agree that this picture is still very incomplete except in the cases of a few well-studied groups (e.g. birds among animals and flowering plants). At least twice the total number of known species remains undescribed: these are primarily insects and other ...
Urban Vegetation
Urban Vegetation

... basin), and Eupatorium adenophorum, a flowering shrub native to Mexico (also called snakeroot), have brought great harm to both urban and rural environments in China (Bao 2008). In the beginning, people may bring in the invasive species for economic purposes (e.g., Eichhornia crassipes was supplied a ...
An empirical evaluation of the African elephant as a focal species for
An empirical evaluation of the African elephant as a focal species for

... We evaluated patterns of co-occurrence of large (> 1 kg) mammal species (nomenclature as in Kingdon, 1997) and guilds in a potential linkage in central Tanzania that links two of the largest reserve complexes in the world, the Ruaha and Selous ecosystems. Specifically, we sought to determine the deg ...
The Protozoans
The Protozoans

... multicellular organisms arose from some unicellular form. The particular kind of unicellular organism is not known because this major evolutionary step took place more than 600 million years ago in the Precambrian Era. No well-preserved fossils have been found that actually document this transition ...
Managing Grassland Ecosystems - Biodiversity of the Western
Managing Grassland Ecosystems - Biodiversity of the Western

... Melbourne to the South Australian border. Since European settlement, grasslands have been managed differently which has resulted in only small patches of grasslands remaining. Discuss how land management has changed since European settlement and how grasslands could be improved. Prompt students to c ...
deflected succession
deflected succession

... compete for exactly the same resources for an extended period of time. (G.F. Gause) • One will either migrate, become extinct, or partition the resource and utilize a sub-set of the same resource. • Given resource can only be partitioned a finite number of times. ...
call diversity and diel
call diversity and diel

... community of Kudremukh National Park were examined using acoustic spot sampling. The twenty-four hour sampling time was divided into eight sampling periods of three hours each. Sampling was carried out for two non-consecutive periods per day in a given transect. Acoustic spot sampling was carried ou ...
DISPERSAL OF LIVING ORGANISMS INTO AQUATIC ECOSYSTEMS
DISPERSAL OF LIVING ORGANISMS INTO AQUATIC ECOSYSTEMS

... bones, were doubtless lost when the fish was returned to feral conditions (Laycock 1966). Within the first two decades of the 1900s, the introduction of common carp was generally recognized as a mistake, particularly as it began to dominate many waters in the midwest and east (Courtenay et al. 1984, ...
Adaptations in Species
Adaptations in Species

... Natural selection is the process by which organisms with variations that help them survive in their environment live longer, compete better, and reproduce more than those that do not have the variation. If a variation helps an organism survive or compete better in its environment, the organism with ...
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Introduced species



An introduced, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are called invasive species. Some have a negative effect on a local ecosystem. Some introduced species may have no negative effect or only minor impact. Some species have been introduced intentionally to combat pests. They are called biocontrols and may be regarded as beneficial as an alternative to pesticides in agriculture for example. In some instances the potential for being beneficial or detrimental in the long run remains unknown. A list of some introduced species is given in a separate article.The effects of introduced species on natural environments have gained much scrutiny from scientists, governments, farmers and others.
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