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  • 1
    Online Resource
    Online Resource
    A global database of nitrogen and phosphorus excretion rates of aquatic animals
    Wiley ; 2017
    In:  Ecology Vol. 98, No. 5 ( 2017-05), p. 1475-1475
    Details
    In: Ecology, Wiley, Vol. 98, No. 5 ( 2017-05), p. 1475-1475
    Abstract: Animals can be important in modulating ecosystem‐level nutrient cycling, although their importance varies greatly among species and ecosystems. Nutrient cycling rates of individual animals represent valuable data for testing the predictions of important frameworks such as the Metabolic Theory of Ecology ( MTE ) and ecological stoichiometry ( ES ). They also represent an important set of functional traits that may reflect both environmental and phylogenetic influences. Over the past two decades, studies of animal‐mediated nutrient cycling have increased dramatically, especially in aquatic ecosystems. Here we present a global compilation of aquatic animal nutrient excretion rates. The dataset includes 10,534 observations from freshwater and marine animals of N and/or P excretion rates. These observations represent 491 species, including most aquatic phyla. Coverage varies greatly among phyla and other taxonomic levels. The dataset includes information on animal body size, ambient temperature, taxonomic affiliations, and animal body N:P. This data set was used to test predictions of MTE and ES , as described in Vanni and McIntyre (2016; Ecology DOI : 10.1002/ecy.1582 ).
    Type of Medium: Online Resource
    ISSN: 0012-9658 , 1939-9170
    URL: Issue
    URL: Article
    DOI: 10.1002/ecy.2017.98.issue-5
    DOI: 10.1002/ecy.1792
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2017
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  • 2
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    Online Resource
    Long-term dataset on aquatic responses to concurrent climate change and recovery from acidification
    Springer Science and Business Media LLC ; 2018
    In:  Scientific Data Vol. 5, No. 1 ( 2018-04-10)
    Details
    In: Scientific Data, Springer Science and Business Media LLC, Vol. 5, No. 1 ( 2018-04-10)
    Abstract: Concurrent regional and global environmental changes are affecting freshwater ecosystems. Decadal-scale data on lake ecosystems that can describe processes affected by these changes are important as multiple stressors often interact to alter the trajectory of key ecological phenomena in complex ways. Due to the practical challenges associated with long-term data collections, the majority of existing long-term data sets focus on only a small number of lakes or few response variables. Here we present physical, chemical, and biological data from 28 lakes in the Adirondack Mountains of northern New York State. These data span the period from 1994–2012 and harmonize multiple open and as-yet unpublished data sources. The dataset creation is reproducible and transparent; R code and all original files used to create the dataset are provided in an appendix. This dataset will be useful for examining ecological change in lakes undergoing multiple stressors.
    Type of Medium: Online Resource
    ISSN: 2052-4463
    URL: Article
    DOI: 10.1038/sdata.2018.59
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2018
    detail.hit.zdb_id: 2775191-0
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  • 3
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    Online Resource
    Differences in nutrient limitation and grazer suppression of phytoplankton in seepage and drainage lakes of the Adirondack region, NY, U.S.A
    Wiley ; 2000
    In:  Freshwater Biology Vol. 43, No. 3 ( 2000-03), p. 391-407
    Details
    In: Freshwater Biology, Wiley, Vol. 43, No. 3 ( 2000-03), p. 391-407
    Abstract: 1. For seepage and drainage lakes of the Adirondack mountain region (NY, U.S.A) hydrologic regime is correlated with physical and chemical differences that can affect phytoplankton and planktonic food webs (e.g. presence and influence of wetlands, dissolved organic carbon concentration, anoxia, nutrient cycling). We conducted short‐term (48 h), in situ enclosure experiments to evaluate the relative importance of macrozooplankton grazing and nutrient limitation of phytoplankton biomass in small Adirondack seepage and drainage lakes ( N  = 18, 1–137 ha). Epilimnetic dissolved organic carbon (DOC) concentrations and pH values represented the diversity of the region. We measured chlorophyll a changes in response to grazer removal ( 〉  120 μm) and nutrient addition (∼ 10× ambient N, P, or N + P), and evaluated changes with respect to in situ light, temperature, NO 3 , NH 4 , SRP, and crustacean assemblage characters. 2. Nutrient addition stimulated significant increase in chlorophyll a concentration at 11 of 18 sites (GLM, Tukey–Kramer). Phytoplankton of clearwater drainage lakes were P‐limited, whereas clearwater and brownwater seepage lakes responded to additions of N and/or N + P. Relative light availability explained half the variance in response to nutrient addition in drainage ( r2  = 0.48), but not seepage lake experiments ( P 〉  0.05). 3. We observed responses to grazer removal at eight of 18 sites, usually clearwater drainage lakes. Crustacean grazing may be as significant as nutrient limitation of [chl  a ] for many drainage lake phytoplankton assemblages. Responses were related to in situ density of zooplankton only in drainage lakes. Light explained some variability in response to grazer removal for drainage ( r2  = 0.35) and seepage lake experiments ( r2  = 0.35). 4. These experiments provide evidence that hydrology may ultimately play an important role in determining nutrient and grazer regulation of phytoplankton. Proximate mechanisms affecting our results may be associated with differences in wetland vegetation, [DOC], and nutrient cycling.
    Type of Medium: Online Resource
    ISSN: 0046-5070 , 1365-2427
    URL: Article
    DOI: 10.1046/j.1365-2427.2000.00573.x
    Language: English
    Publisher: Wiley
    Publication Date: 2000
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    detail.hit.zdb_id: 121180-8
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  • 4
    Online Resource
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    Effect of main-stem dams on zooplankton communities of the Missouri River (USA)
    Springer Science and Business Media LLC ; 2009
    In:  Hydrobiologia Vol. 628, No. 1 ( 2009-7), p. 121-135
    Details
    In: Hydrobiologia, Springer Science and Business Media LLC, Vol. 628, No. 1 ( 2009-7), p. 121-135
    Type of Medium: Online Resource
    ISSN: 0018-8158 , 1573-5117
    URL: Article
    DOI: 10.1007/s10750-009-9750-8
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2009
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    detail.hit.zdb_id: 214428-1
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  • 5
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    Online Resource
    Effects of lake liming on phytoplankton production in acidic Adirondack lakes
    Springer Science and Business Media LLC ; 1988
    In:  Water, Air, and Soil Pollution Vol. 41, No. 1-4 ( 1988-03), p. 223-240
    Details
    In: Water, Air, and Soil Pollution, Springer Science and Business Media LLC, Vol. 41, No. 1-4 ( 1988-03), p. 223-240
    Type of Medium: Online Resource
    ISSN: 0049-6979 , 1573-2932
    URL: Article
    DOI: 10.1007/BF00160352
    RVK:
    ZC 7520
    RVK:
    AR 10100
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 1988
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    detail.hit.zdb_id: 120499-3
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  • 6
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    Ecological benefits and risks arising from liming sugar maple dominated forests in northeastern North America
    Canadian Science Publishing ; 2015
    In:  Environmental Reviews Vol. 23, No. 1 ( 2015-03), p. 66-77
    Details
    In: Environmental Reviews, Canadian Science Publishing, Vol. 23, No. 1 ( 2015-03), p. 66-77
    Abstract: Liming, the application of carbonate materials (e.g., CaCO 3 , CaMg(CO 3 ) 2 ) to soils and surface waters, has been used extensively in Europe, and to a lesser extent in Canada and the United States, to mitigate the effects of acid deposition on forest and aquatic ecosystems. This literature review was conducted to assess the effects of liming on ecologically and economically important sugar maple dominated ecosystems of northeastern North America, where it is increasingly used to treat sugar maple dieback. Potential direct and indirect effects were considered to determine whether the use of liming to revitalize these forests could negatively affect other ecological parameters, including those in adjacent aquatic habitats. Based on current scientific literature, it is not anticipated that liming at rates of 1–3 t ha −1 would have major detrimental effects on these ecosystems. However, liming could have negative effects on northern hardwood forests with regard to earthworm invasions. The choice of liming as a mitigation tool should be made not only after weighing the potentially negative effects against the benefits of restoring sugar maple dominated stands in poorly buffered soils, but also after considering ecological components that could be lost or never recovered if an acidified forest ecosystem is not limed.
    Type of Medium: Online Resource
    ISSN: 1181-8700 , 1208-6053
    URL: Article
    DOI: 10.1139/er-2014-0048
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 2015
    detail.hit.zdb_id: 2027518-3
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  • 7
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    Online Resource
    Algal production and trihalomethane formation potential: an experimental assessment and inter-river comparison
    Canadian Science Publishing ; 2002
    In:  Canadian Journal of Fisheries and Aquatic Sciences Vol. 59, No. 9 ( 2002-09-01), p. 1482-1491
    Details
    In: Canadian Journal of Fisheries and Aquatic Sciences, Canadian Science Publishing, Vol. 59, No. 9 ( 2002-09-01), p. 1482-1491
    Abstract: Trihalomethanes (THMs) are byproducts produced during the disinfection of drinking water. We combined survey and experimental approaches to identify factors that influence THM formation potential (THMFP) in the Ohio River drainage basin. Two surveys of the Ohio River and its five principal tributaries were conducted to characterize spatial variation in THMFP in relation to algal abundance and suspended organic matter. We performed three experiments by placing Ohio River water in 2000-L outdoor mesocosms and manipulating algal senescence and bloom development by shading. Increases in THMFP among high- and low-light and dark tanks suggest that algal production, algal senescence, and possibly photolysis increased THMFP by as much as 50% over 36 days. Comparable yields of THMs (per unit of chlorophyll) were observed in both survey and experimental settings. Comparison of input waters with outputs indicates that the Ohio River at times acts to attenuate downstream transport of THM precursors. Our findings suggest that both watershed-scale and internal processes regulating THMFP should be considered as utilities develop strategies to meet new drinking water guidelines.
    Type of Medium: Online Resource
    ISSN: 0706-652X , 1205-7533
    URL: Article
    DOI: 10.1139/f02-121
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 2002
    detail.hit.zdb_id: 7966-2
    detail.hit.zdb_id: 1473089-3
    SSG: 21,3
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  • 8
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    Effects of base addition and brook trout (Salvelinus fontinalis) introduction on the plankton community of an acidic Adirondack lake
    Canadian Science Publishing ; 1997
    In:  Canadian Journal of Fisheries and Aquatic Sciences Vol. 54, No. 6 ( 1997-06-01), p. 1367-1376
    Details
    In: Canadian Journal of Fisheries and Aquatic Sciences, Canadian Science Publishing, Vol. 54, No. 6 ( 1997-06-01), p. 1367-1376
    Abstract: Calcite was added to Woods Lake in 1985 and 1987, and to its watershed in 1990, to restore and maintain water quality conditions suitable for reestablishing brook trout (Salvelinus fontinalis). Juvenile and adult brook trout were introduced following the first chemical treatment and were stocked annually thereafter from 1985 to 1989. In response to the combined chemical and biological manipulation, phytoplankton abundance increased whereas production per unit of biomass decreased. We attribute the increase in phytoplankton abundance and the reduction in biomass turnover rates to a decrease in zooplankton grazing. Zooplankton densities and estimated community grazing rates were lower during the posttreatment period despite a shift from small-bodied taxa (Diaptomus minutus, Bosmina longirostris) to a more diverse assemblage that included four species of daphnids. We attribute reductions in zooplankton abundance to planktivory of introduced brook trout. The changes we observed in phytoplankton and zooplankton species composition were consistent with trends observed during whole-lake acidification experiments, but functional responses in our experiment (decreased zooplankton abundance, increased phytoplankton abundance) were not. Our functional responses were consistent, however, with those observed previously in food webs manipulated to increase planktivore abundance.
    Type of Medium: Online Resource
    ISSN: 0706-652X , 1205-7533
    URL: Article
    DOI: 10.1139/f97-040
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 1997
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    detail.hit.zdb_id: 1473089-3
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  • 9
    Online Resource
    Online Resource
    Effects of Calcite Treatment on Primary Producers in Acidified Adirondack Lakes. II. Short-Term Response by Phytoplankton Communities
    Canadian Science Publishing ; 1989
    In:  Canadian Journal of Fisheries and Aquatic Sciences Vol. 46, No. 2 ( 1989-02-01), p. 352-359
    Details
    In: Canadian Journal of Fisheries and Aquatic Sciences, Canadian Science Publishing, Vol. 46, No. 2 ( 1989-02-01), p. 352-359
    Abstract: The effects of calcite addition on two acidic Adirondack lakes were studied by investigators participating in the Lake Acidification Mitigation Project. Changes in phytoplankton biomass, productivity, and species composition were monitored during the ice-free period prior to and following lake treatment. Changes in water chemistry following limestone addition were largely restricted to the upper water column since calcite particles applied to the lake surface did not effectively penetrate the thermocline. Increased phytoplankton production and biomass were observed during the posttreatment period. Phytoplankton densities and rates of production were similar in both the neutralized (pH  〉  7.5) and acidic (pH  〈  5.5) portions of the water column; however, species composition was markedly different. The phytoplankton assemblage of the upper water column was largely comprised of chlorophytes and chrysophytes which had not been observed prior to treatment. In contrast, the deep-water assemblage comprised many of the same taxa that had been dominant during the pretreatment periodsss.
    Type of Medium: Online Resource
    ISSN: 0706-652X , 1205-7533
    URL: Article
    DOI: 10.1139/f89-046
    Language: English
    Publisher: Canadian Science Publishing
    Publication Date: 1989
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    detail.hit.zdb_id: 1473089-3
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  • 10
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    Online Resource
    Role of dissolved organic carbon in the attenuation of photosynthetically active and ultraviolet radiation in Adirondack lakes
    Wiley ; 2000
    In:  Freshwater Biology Vol. 43, No. 3 ( 2000-03), p. 339-354
    Details
    In: Freshwater Biology, Wiley, Vol. 43, No. 3 ( 2000-03), p. 339-354
    Abstract: 1. We surveyed eighty‐five lakes located in the Adirondack Mountain Region of New York State, U.S.A., to characterize the attenuation of photosynthetically active (PAR) and ultraviolet radiation (UVR) in relation to dissolved organic carbon (DOC) concentrations and pH. Attenuation of PAR was quantified in situ . Attenuation was also inferred by measuring the light absorption of filtered lake water samples at wavelengths (300, 340 and 440 nm) representing UV‐B, UV‐A and PAR. 2. Substantial variation in transparency was observed among lakes in this region. Attenuation depths ( z 1% ) for PAR ranged from 0.5 to greater than 20 m, while inferred values for UV‐B and UV‐A ranged from a few centimetres to 〉  5 m. Median values of UV‐A penetration (0.75 m) and UV‐B penetration (0.45 m) corresponded to 11% (UV‐A) and 6% (UV‐B) of lake maximum depth. 3. Much of the variation in PAR and UVR attenuation was explained by differences in lake DOC. Univariate power models based solely on DOC accounted for 85% (PAR), 90% (UV‐A) and 91% (UV‐B) of the variation in absorption. 4. Attenuation and absorption coefficients were generally lower for recently acidified lakes compared to acidic and circumneutral lakes which have not undergone recent acidification. However, differences among these three groups of lakes were not statistically significant. Our results suggest that the effects of acidification on the optical properties of a regional population of lakes, even in an area experiencing widespread acidification, are relatively subtle in comparison with other factors contributing to inter‐lake variability. 5. The presence of near‐shore wetlands is probably a key factor influencing regional variability in DOC and light climate among Adirondack lakes. Temporal variability in climatic factors influencing wetland DOC production and export may mask more subtle influences on lake DOC associated with anthropogenic acidification.
    Type of Medium: Online Resource
    ISSN: 0046-5070 , 1365-2427
    URL: Article
    DOI: 10.1046/j.1365-2427.2000.00518.x
    Language: English
    Publisher: Wiley
    Publication Date: 2000
    detail.hit.zdb_id: 2020306-8
    detail.hit.zdb_id: 121180-8
    SSG: 12
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