Results 61 to 70 of about 336,542 (370)

A review of the environments, biota, and methods used in microplastics research in South Africa

open access: yesSouth African Journal of Science
Microplastics are small plastic materials often defined as those between 5 mm and 0.05 mm in size. Microplastics can have toxicological impacts on various biota, from gut blockages to the transport or leaching of toxicants used in their production or ...
Heinrich T.J. Dahms, Richard Greenfield
doaj   +1 more source

Does Long-Term Macrophyte Management in Lakes Affect Biotic Richness and Diversity? [PDF]

open access: yes, 2005
We hypothesize that the richness and diversity of the biota in Lake Moraine (42°50’47”N, 75°31’39”W) in New York have been negatively impacted by 60 years of macrophyte and algae management to control Eurasian watermilfoil ( Myriophyllum spicatum L.
Harman, Willard N.   +2 more
core  

Soil biota contributions to soil aggregation

open access: yesNature Ecology & Evolution, 2017
Humankind depends on the sustainability of soils for its survival and well-being. Threatened by a rapidly changing world, our soils suffer from degradation and biodiversity loss, making it increasingly important to understand the role of soil ...
A. Lehmann, Weishuang Zheng, M. Rillig
semanticscholar   +1 more source

Toxic Metals in Dried Marine Fish and Implications for Human Health in Bangladesh and Exporting Countries

open access: yesFood Safety and Health, EarlyView.
This study assessed toxic metals in five dried marine fish species from Bangladesh. Although most metals were within safe limits, chromium (Cr) consistently exceeded FAO/WHO standards, especially at Kuakata Beach. The findings highlight localized contamination hotspots and species‐specific bioaccumulation, while risk assessment supports the safety and ...
Shapla Khatun   +7 more
wiley   +1 more source

Environmental selection overturns the decay relationship of soil prokaryotic community over geographic distance across grassland biotas

open access: yeseLife, 2022
Though being fundamental to global diversity distribution, little is known about the geographic pattern of soil microorganisms across different biotas on a large scale.
Biao Zhang   +13 more
doaj   +1 more source

The Qingjiang biota—A Burgess Shale–type fossil Lagerstätte from the early Cambrian of South China

open access: yesScience, 2019
A treasure trove of Cambrian secrets Animal life exploded in diversity and form during the Cambrian period about 500 million years ago. Fu et al. describe an early Cambrian fossil site in China that contains a variety of specimens, more than half of ...
Dongjing Fu   +14 more
semanticscholar   +1 more source

Algal Blooms in Lakes Increase After Wildfire Smoke Events in the Contiguous United States

open access: yesGlobal Change Biology Communications, EarlyView.
Temporary pulses of surface chlorophyll‐a are identified following wildfire smoke events in lakes and reservoirs across the United States. ABSTRACT Area burned by wildfire has increased in the contiguous United States and in many places globally in recent years, impacting communities and ecosystems nearby and even far downwind of fires. We examined the
Nicole E. Olson   +10 more
wiley   +1 more source

Mid-Miocene cooling and the extinction of tundra in continental Antarctica [PDF]

open access: yes, 2008
A major obstacle in understanding the evolution of Cenozoic climate has been the lack of well dated terrestrial evidence from high-latitude, glaciated regions.
Ashworth, A.C.   +12 more
core   +1 more source

Invasive plants differentially affect soil biota through litter and rhizosphere pathways: a meta-analysis.

open access: yesEcology Letters, 2018
Invasive plants affect soil biota through litter and rhizosphere inputs, but the direction and magnitude of these effects are variable. We conducted a meta-analysis to examine the different effects of litter and rhizosphere of invasive plants on soil ...
Pei Zhang, Bo Li, Jihua Wu, Shuijin Hu
semanticscholar   +1 more source

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