Abstract：
:We assessed how diatom metrics were related to different ranges of agricultural land use. Diatom assemblage composition, nutrients, and landscape characteristics were determined at 232 sites in eight agriculturally dominated study areas of the continental United States. Two regional groups based on differences in diatom relations to human disturbance were determined. Changes in diatom species composition were related to nutrients, pH, and conductivity in the eastern study areas (due to more wetlands) and more exclusively to nutrients in the west-central study areas. Homogenization of diatom flora among streams was related to high agricultural disturbance at this transcontinental scale. Species traits were developed separately for the east and west-central study groups and calculated two ways: indicator species analysis for taxa in low and high TN or TP conditions and weighted average partial least squares models of TN and TP concentration. These diatom metrics were significantly related to many indicators of agricultural land use in watersheds, especially percent row crops. Further analysis was conducted on only the west-central region due to its larger sample size. Overall, diatom metrics using species responses to N gradients were better related to agricultural land use than were species responses to P gradients. Most nutrient-based diatom metrics changed greatly in response to low ranges of percent row crops, but only a few high N diatom metrics responded to high row crop conditions. The greater response of diatoms to changes in low agriculture conditions may be due to past diatom evolution occurring when most waters had low nutrient conditions.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Pillsbury R,Stevenson RJ,Munn MD,Waite Idoi
10.1007/s10661-019-7357-8subject
Has Abstractpub_date
2019-03-19 00:00:00pages
228issue
4eissn
0167-6369issn
1573-2959pii
10.1007/s10661-019-7357-8journal_volume
191pub_type
杂志文章abstract：:Metal uptake potentials of Pseudomonas aeruginosa CA207Ni, Burkholderia cepacia CA96Co, Rhodococcus sp. AL03Ni, and Corynebacterium kutscheri FL108Hg were studied to determine their competence in detoxification of toxic metals during growth. Metabolism-dependent metal biouptake of the bacteria revealed appreciable upt...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-015-4731-z
更新日期：2015-08-01 00:00:00
abstract：:The water quality of Songkla Lake for organochlorine (OC) pesticide contamination was studied from chosen sampling sites (stations) using the lakes geographic data and pollution sources. The water samples were collected monthly from 13 stations in Songkla Lake during September 1991-November 1992. The OC pesticide resi...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00546660
更新日期：1994-10-01 00:00:00
abstract：:This study assessed concentration levels of particulate matter (PM) in the ambient environment of Ilorin metropolis, Nigeria, during haze episodes. Meteorological data (wind speed and direction, rainfall data, sunshine data, relative humidity and temperature) were obtained. Aerocet 531S particle counter (MetOne Instru...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-017-6414-4
更新日期：2017-12-22 00:00:00
abstract：:Nitric oxide (NO) and nitrous oxide (N2O) fluxes were measured from agricultural, forest and moorland environments, using chamber techniques. Maximum emissions of NO and N2O were measured from the agricultural soils shortly after fertiliser application (7 ng NO-N m(-2) s(-1) and 91 ng N2O-N m(-2) s(-1)). For the non-a...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00547191
更新日期：1994-05-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-017-6215-9
更新日期：2017-09-11 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-017-6007-2
更新日期：2017-07-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08491-z
更新日期：2020-08-03 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-012-2641-x
更新日期：2013-02-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-015-4506-6
更新日期：2015-05-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-011-2358-2
更新日期：2012-09-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-011-1935-8
更新日期：2011-12-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-010-1638-6
更新日期：2011-06-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-011-2127-2
更新日期：2012-04-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-007-0017-4
更新日期：2008-10-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-007-9939-0
更新日期：2008-09-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-016-5181-y
更新日期：2016-03-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00399165
更新日期：1982-03-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-013-3505-8
更新日期：2014-03-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
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更新日期：2017-09-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
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更新日期：2016-12-01 00:00:00
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08747-8
更新日期：2020-11-24 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00549132
更新日期：1993-04-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-008-0546-5
更新日期：2009-10-01 00:00:00
abstract：:Located in Central South China, Hunan province is rich in mineral resources. To study the influence of mining on Cd pollution to local agricultural eco-system, the paddy soils and rice grain of Y county in northern Hunan province were intensively monitored. The results were as follows: (1) Total Cd (T-Cd) content in t...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-013-3296-y
更新日期：2013-12-01 00:00:00
abstract：:Physicochemical characteristics of dissolved components from environmental samples have been studied in order to understand the impact of atmospheric pollution from aerosols and rain on surface and sub-surface waters, at industrialised urban areas in and around Mangalore, southwest coast of India. Comparatively, the H...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-006-9565-2
更新日期：2007-10-01 00:00:00
abstract：:With the rapid advancement of industrialization without effective supervision, industrial aquatic toxic metal (TM) emissions pose threats to human health in China. Due to differences in socioeconomic development, the regional disparity of industrial aquatic TM emissions is obvious nationwide. In this study, the human ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-020-08279-1
更新日期：2020-04-16 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-014-4093-y
更新日期：2015-01-01 00:00:00
abstract：:Different genetic biomarkers have been used to evaluate the pollution effects of mutagenic agents such as metals and also a great variety of chemicals delivered on the environment by human activities. This way, the aim of the present report was to evaluate the effects of inorganic lead in fishes through the frequency ...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-008-0566-1
更新日期：2009-11-01 00:00:00
