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Showing 1 to 12 of 8094 entries
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Reproductive effort and value in different populations of the marine mussel, Mytilus edulis L.

Oecologia

Bayne BL, Salkeld PN, Worrall CM.
PMID: 25024142
Oecologia. 1983 Aug;59(1):18-26. doi: 10.1007/BF00388067. Epub 2004 Sep 13.

Fecundity, reproductive effort (estimated both from production measurements and from physiological data), the energetic costs of reproduction and the reproductive value of different size classes were measured for mussels at different sites and related to age and to tissue...

Use of doubly-labeled water ((3)HH (18)O) for determination of H 2O flux and CO 2 production by a mammal in a humid environment.

Oecologia

Gettinger RD.
PMID: 25024146
Oecologia. 1983 Aug;59(1):54-7. doi: 10.1007/BF00388071. Epub 2004 Sep 13.

The accuracy of the doubly labeled water ((3)HH(18)O) technique for estimating H2O flux and CO2 production in pocket gophers was evaluated in laboratory experiments. Experiments were conducted under conditions of elevated humidity in order to determine the influence of...

Selective predation and habitat shift in a copepod species - support for the predation hypothesis.

Oecologia

Vuorinen I, Rajasilta M, Salo J.
PMID: 25024148
Oecologia. 1983 Aug;59(1):62-4. doi: 10.1007/BF00388073. Epub 2004 Sep 13.

In studying the relevance of the predation hypothesis as an explanation for the vertical migration of zooplankton two predictions were tested: 1) The egg sacs of Eurytemora are sufficient to cause different predation pressure in food selection experiments with...

Photosynthetic characteristics of Sonoran Desert winter annuals.

Oecologia

Werk KS, Ehleringer J, Forseth IN, Cook CS.
PMID: 25024156
Oecologia. 1983 Aug;59(1):101-5. doi: 10.1007/BF00388081. Epub 2004 Sep 13.

Photosynthesis in Sonoran Desert winter annuals appeared to be similar to those observed in other C3 photosynthetic pathway herbs, although photosynthetic capacities ranged from 18 to 65 μmol CO1 m(-2) s(-1) under natural conditions. The higher photosynthetic capacities were...

Do archipelagoes really preserve fewer species than one island of the same total area.

Oecologia

Kindlmann P.
PMID: 25024160
Oecologia. 1983 Aug;59(1):141-4. doi: 10.1007/BF00388085. Epub 2004 Sep 13.

The optimal strategy in the design of nature reserves is investigated by means of the theory of island biogeography. Some previous results are revised. A new form of the incidence functions is presented. Their merit is that they do...

Causes and consequences of small population size for a specialist parasitoid wasp.

Oecologia

van Nouhuys S, Tay WT.
PMID: 28547082
Oecologia. 2001 Jun;128(1):126-133. doi: 10.1007/s004420100635. Epub 2001 Jun 01.

The parasitoid wasp Cotesia melitaearum lives in extremely small extinction-prone populations in the Åland islands of southwest Finland. Intensive observational data from two generations, a laboratory competition experiment, and 8 years of survey data were used to measure the...

Variation in measured values of photosynthetic quantum yield in ecophysiological studies.

Oecologia

Singsaas EL, Ort DR, DeLucia EH.
PMID: 28547085
Oecologia. 2001 Jun;128(1):15-23. doi: 10.1007/s004420000624. Epub 2001 Jun 01.

Photosynthetic efficiency is often quantified as the light-limited, maximum quantum yield in ecophysiological studies. Four published comparative studies report that photosynthetic efficiency varies little among plant species of widely diverse origins, and that quantum yields were near the maximum...

Natural abundance of .

Oecologia

Ekblad A, Högberg P.
PMID: 28547099
Oecologia. 2001 May;127(3):305-308. doi: 10.1007/s004420100667. Epub 2001 May 01.

Soil respiration from a boreal mixed coniferous forest showed large seasonal variation in natural abundance of

The causes of spatial patterning of mounds of a fungus-cultivating termite: results from nearest-neighbour analysis and ecological studies.

Oecologia

Korb J, Linsenmair KE.
PMID: 28547103
Oecologia. 2001 May;127(3):324-333. doi: 10.1007/s004420000597. Epub 2001 May 01.

Little is known about processes regulating population dynamics in termites. We investigated the distribution of mound-colonies of the fungus-cultivating termite Macrotermes bellicosus (Smeathman) in two habitats in the Comoé National Park (Côte d'Ivoire) with nearest-neighbour analysis differentiating between different...

Changes induced by elk browsing in the aboveground biomass production and distribution of willow (Salix monticola Bebb): their relationships with plant water, carbon, and nitrogen dynamics.

Oecologia

Peinetti HR, Menezes RSC, Coughenour MB.
PMID: 28547104
Oecologia. 2001 May;127(3):334-342. doi: 10.1007/s004420000593. Epub 2001 May 01.

Willows are dominant woody plants of many high-elevation riparian areas of the western USA, and constitute an important food resource for various ungulates, which tend to concentrate in riparian areas. The response of willow to browsing was analyzed in...

Nutritional quality of seston for the freshwater herbivore Daphnia galeata × hyalina: biochemical versus mineral limitations.

Oecologia

Boersma M, Schöps C, McCauley E.
PMID: 28547189
Oecologia. 2001 Nov;129(3):342-348. doi: 10.1007/s004420100728. Epub 2001 Nov 01.

The quality of natural seston as food for zooplankters can be highly variable. Thus far, experimental evidence on the factors affecting food quality under natural conditions is scarce. Hence, in this study, we set out to investigate how Daphnia...

Global patterns in root decomposition: comparisons of climate and litter quality effects.

Oecologia

Silver WL, Miya RK.
PMID: 28547196
Oecologia. 2001 Nov;129(3):407-419. doi: 10.1007/s004420100740. Epub 2001 Nov 01.

Root decomposition represents a significant C flux in terrestrial ecosystems. Roots are exposed to a different decomposition environment than aboveground tissues, and few general principles exist regarding the factors controlling rates of root decay. We use a global dataset...

Showing 1 to 12 of 8094 entries