Results 51 to 60 of about 4,485 (193)
Underground allies: Mycorrhizal flexibility facilitates orchid occurrence in post‐mining landscapes
Epipactis helleborine associates with largely habitat‐specific fungal communities, with limited overlap between mining and woodland sites, yet maintains comparable genetic diversity across habitats. These results highlight the role of mycorrhizal flexibility in enabling habitat shifts and expanding ecological niches in human‐altered landscapes ...
A. Ashokan +5 more
wiley +1 more source
Significant Role for Microbial Autotrophy in the Sequestration of Soil Carbon [PDF]
ABSTRACT Soils were incubated for 80 days in a continuously labeled 14 CO 2 atmosphere to measure the amount of labeled C incorporated into the microbial biomass. Microbial assimilation of 14 C differed between soils and accounted for 0.12% to 0.59% of soil ...
Hongzhao, Yuan +4 more
openaire +2 more sources
Size distribution of planktonic autotrophy and microheterotrophy in DeGray Reservoir, Arkansas [PDF]
Naturally occurring assemblages of phytoplankton and bacterioplankton were radiolabelled with sodium /sup 14/C-bicarbonate and sodium /sup 3/H-acetate and size fractionated to determine the size structure of planktonic autotrophy and microheterotrophy in
Kimmel, B. L., Groeger, A. W.
core
Relationship between Fragum unedo shell height (mm) and tissue δ13C. Points are color coded by shell size categories (small, medium, big) with symbol shapes representing the types of tissues (foot, mantle, or gill). ABSTRACT Photosymbiotic marine invertebrates derive carbon from both symbiont photosynthesis and heterotrophic feeding, yet the relative ...
Aaron Schmidt +4 more
wiley +1 more source
Autotrophy in Maize Husk Leaves [PDF]
The natural abundance of carbon and hydrogen isotopic composition, expressed as a delta(13)C value of plant dry matter and cellulose in the hypsophylls (husk leaves) of maize (Zea mays L.) was measured and compared with that of leaves and cobs. The delta(13)C values of outer hypsophylls were usually 2 to 3% per thousand more negative than leaves or ...
D, Yakir, B, Osmond, L, Giles
openaire +2 more sources
Growth, transport, and recruitment of phytoplankton in a mid‐order river
Abstract Phytoplankton dynamics in rivers have long challenged growth models, which predict limited biomass accumulation due to insufficient water residence times—yet phytoplankton populations often persist despite this constraint. This paradox is especially pronounced in mid‐order rivers, where water residence times appear insufficient to support ...
Marc Peipoch +2 more
wiley +1 more source
Seabird-Derived Nutrients Supply Modulates the Trophic Strategies of Mixotrophic Corals
The ability of corals to modulate their nutrition strategy in response to variable nutrient supply remains poorly understood, limiting our understanding of energy flow in coral reef ecosystems and thus our comprehension of their resilience to global ...
Martin Thibault +10 more
doaj +1 more source
Prevalence of Autotrophy in Non-humic African Lakes
Heterotrophic respiration of organic matter (OM) is thought to dominate over aquatic primary production (PP) in most freshwater lake ecosystems. This paradigm implies that lateral transport of OM from the terrestrial biosphere subsidize the major fraction of aquatic respiration and that many lakes are a net source of carbon dioxide (CO2) to atmosphere.
Morana, Cédric +7 more
openaire +3 more sources
Multi‐stressor experiments on three coral species demonstrate hypoxia produces mostly additive effects with acidification but synergistically amplifies physiological stress under elevated temperatures. As global and local environmental change increase compound stress events on coral reefs, distinguishing hypoxia‐driven effects and interactive stressor ...
Kelly W. Johnson +4 more
wiley +1 more source
Biochemistry and genetics of autotrophy in Methanococcus [PDF]
The project investigated fundamental aspects of carbon metabolism and genetics in the methane-producing archaeon Methanococcus maripaludis. The project yielded 23 peer-reviewed publications and five reviews from 1997-2007. PDFs of the peer-reviewed publications are included in the next section. Some papers of special interest are listed below.
openaire +2 more sources

