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Start Over Format bez média Subject ecology

2. Bezobratlí na katedře ekologie Přírodovědecké fakulty Univerzity Karlovy v Praze

Creator:
Jan Fott
Format:
print, bez média, and svazek
Type:
article, text, články, journal articles, model:article, and TEXT
Subject:
Biologické vědy, Univerzita Karlova., Katedra ekologie, ekologie, přírodovědný výzkum, bezobratlí, ecology, natural science research, invertebrates, univerzitní výzkum, university research, 2, and 57/59
Language:
Czech
Description:
Jan Fott.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

4. Composition and structure of helminth communities in two populations of Pipistrellus pipistrellus (Chiroptera: Vespertilionidae) from Spain

Creator:
Esteban, J. Guillermo, Amengual, Blanca, and Serra Cobo, Jordi
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
ecology, helminth community, bats, Pipistrellus pipistrellus, and Spain
Language:
English
Description:
The community composition and structure of helminths of Pipistrellus pipistrellus (Schreber, 1774) from two widely separated Spanish localities, El Saler (n = 42) and the San Pedro pothole (n = 34), were determined and compared. Five species of trematodes, Plagiorchis (Plagiorchis) sp., Lecithodendrium (Lecithodendrium) linstowi Dollfus, 1931, Prosthodendrium (Prosthodendrium) sp., Pycnoporus heteroporus (Dujardin, 1845) and Parabascus semisquamosus (Braun, 1900), and one species of cestode, Hymenolepis pipistrelli López-Neyra, 1941, were found. The two bat populations harboured the same helminth species and showed the same trematode dominance, but the most important differences between the two helminth community structures were attributable to L. (L.) linstowi and H. pipistrelli. The mean species richness in the two localities was not significantly different. The mean number of helminth species per infected bat, mean infracommunity abundance and mean infracommunity diversity showed significant differences between both localities. The number of helminths per bat in both populations displayed an aggregated distribution. Results indicate that the different characteristics of the P. pipistrellus foraging area in both localities are important in determining the composition and structure of helminth communities in this bat species. This is the first study of a Palaearctic bat helminth community.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

5. Contribution to the knowledge of planktic cyanoprokaryotes from central Mexico

Creator:
Komárek , Jiří and Komárková-Legnerová , Jaroslava
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
Plankton, cyanobacteria, cyanoprokaryotes, taxonomy, ecology, distribution, phenotypic variability, Mexico, and tropical biotopes
Language:
English
Description:
The diversity of freshwater and inland saline planktic cyanoprokaryote microflora (cyanobacteria, cyanophytes) in Mexico depends on the wide variation of the biotopes in this country. There are no detailed studies, describing the planktic cyanoprokaryotic species from this region. This paper lists 51 planktic morphospecies, which were found in various water bodies in central Mexico during May 1992 and March-September 1993. Four new species (Cyanobacterium lineatum, Cyanotetras aerotopa, Anabaena fallax, Cylindrospermopsis taverae) are described, and important species commented. Various species characteristic for various types of reservoirs (volcanic lakes, lakes and artificial reservoirs with diverse trophic levels, hypertrophic pools, saline coastal lakes) were found. Taxonomic and ecological elaborations of the planktic cyanobacteria of Mexico (from an ecological, geographical as well as sanitary point of view – eutrofication, biomass production, toxicity) are urgently needed.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

7. Endemic genera of bryophytes of North America (north of Mexico)

Creator:
Schofield , Wilfred Borden
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
bryophytes, distribution, ecology, endemic, liverworts, mosses, reproduction, and North America
Language:
English
Description:
There are 20 endemic genera of mosses and three of liverworts in North America, north of Mexico. All are monotypic except Thelia, with three species. General ecology, reproduction, distribution and nomenclature are discussed for each genus. Distribution maps are provided. The Mexican as well as Neotropical genera of bryophytes are also noted without detailed discussion.
Rights:
http://creativecommons.org/publicdomain/mark/1.0/ and policy:public

8. K problému marxistické ekologie

Creator:
Bartoš, Vít
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
second law of thermodynamics, compartmentation, alienation, ecology, capitalism, scaling, and space-time
Language:
Czech
Description:
This article argues that building an eco-socialist concept of sustainable development must be based on realistic understandings of natural processes and meaningful axiology. First, it focuses on the conflict between Malthus and Marx, which foreshadows modern debates between ecology and socialism. Malthus’s ideas are preferred because in the last instance his principles are logically and ontologically persuasive and empirically relevant. The second part attempts to develop a Marxist perspective on ecological thinking, connecting Marxist economics and thermodynamics using the work of Sergei Podolinsky. This unusual perspective leads to the general conclusion that the ultimate goal of human production is the most effective resistance to the second law of thermodynamics. From these considerations the article derives a norm (value) which states that such resistance should be the supreme goal of advanced civilization. Because life in general is the best counter-entropic barrier, it follows that humanity should strive to expand and develop life. The Marxist critiques of capitalism and of the history of class societies in general are based on the broad notion of “alienation”, which is understood by Marx himself as the opposite of “real life.” Therefore, alienation can be understood as a form of entropy. The biological term “compartmentation” is then used to compare the architecture of biological entities and social systems. Effective compartmentation prevents entropy. Therefore, the study of compartmentation in social entities (capitalism) may indicate where alienation might be structurally incorporated. The article argues that the problem in the last instance is the spatio-temporal scaling of social entities and that all eco-social problems ultimately lie in imperfect interconnection, spatio-temporal and energy scaling or continuity between social entities and between natural and social entities. The conclusion is that we need a completely different metabolic system that mediates the interaction of society and nature.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

9. Malakozoologův průvodce (makro)ekologií

Creator:
Michal Horsák and Horsáková, Veronika
Format:
print, bez média, and svazek
Type:
article, text, články, journal articles, model:article, and TEXT
Subject:
Biologické vědy, malakologie, měkkýši, ekologie, makroekologie, plži, suchozemští bezobratlí, malacology, molluscs, ecology, macroecology, gastropods, terrestrial invertebrates, suchozemští plži, 2, and 57/59
Language:
Czech
Description:
Suchozemští plži patří k nejlépe prozkoumaným skupinám bezobratlých temperátní a boreální zóny. Díky znalostem o ekologii a rozšíření jednotlivých druhů tak představují výbornou modelovou skupinu pro studium rozmanitých témat. Na příkladu plžů byl zkoumán např. fenomén hnízdovitosti společenstev, rozdíly v biologii a rozšíření velkých a drobných druhů s ohledem na míru pasivního šíření, kvartérní vývoj krajiny nebo třeba latitudinální gradient diverzity. Mnohé otázky však stále zůstávají otevřené, např. vlivy predace a mezidruhové konkurence ve společenstvech plžů nebo vazba některých druhů na podmínky obecně považované za nepříznivé, jako jsou velmi chladné oblasti nebo vápníkem chudá stanoviště., Land snails are considered one of the best-explored invertebrates of temperate and boreal zones. With respect to the extensive knowledge about their ecology and distribution, land snails make a great model group for studying various topics. Snails contributed to our knowledge about the nestedness of assemblage composition, differences in biology and distribution of large and small species (regarding their ability for passive dispersal), Quaternary landscape evolution, and the latitudinal diversity gradient. Other topics still remain open, such as the effects of predation and interspecific competition among land-snail assemblages and the association of some species to generally unfavourable conditions (e.g. areas of extremely cold temperatures or calcium-poor sites)., and Michal Horsák, Veronika Horsáková.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

10. Marxian ecology, dialectics, and the hierarchy of needs: interview with John Bellamy Foster by Dan Swain and Monika Woźniak

Creator:
Bellamy Foster, John, Swain, Dan, and Woźniak, Monika
Format:
bez média and svazek
Type:
model:article and TEXT
Subject:
ecology, Marx, Engels, dialectics of nature, needs, socialism, and science
Language:
Czech
Description:
John Bellamy Foster is editor of the Monthly Review and professor of sociology at the University of Oregon. Since the publication of his book Marx’s Ecology in 2000 he has become one of the most significant voices in uncovering Marx’s ecological thinking and developing ecological Marxism. In this interview we discuss his most recent work, the legacy of Soviet environmentalism, the long-running debate over “the dialectics of nature”, and the idea of production according to need.
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public