Urbanization effects on shoreline phytobenthos: a multiscale approach at lake extent

Spitale, Daniel; Scalfi, Alessia; Cantonati, Marco

doi:10.1007/s00027-013-0307-6

Cited by 12 publications

(4 citation statements)

References 36 publications

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“…A full description of the experimental design was published by Spitale et al (2012). Our sampling design included different spatial (10 1 -10 4 m) and temporal (dates-seasons) scales (Spitale et al 2014). We sampled all sites between May and June 2008.…”

Section: Observations On the Lake Phytobenthosmentioning

confidence: 99%

The benthic chlorophyte genus Jaoa (Ulvales), a putative China endemic, in Lake Garda, Italy: ecology, taxonomy, and molecular analyses

et al. 2014

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An unknown green alga (order Ulvales) was a dominant macroalga in the rocky littoral zone of Lake Garda (southeastern Alps). Morphological and phylogenetic analyses indicated the alga was in the genus Jaoa, considered endemic to China. The alga in Lake Garda had numerous rhizoids, a subspherical hollow thallus with irregularly lobate-saccate morphology, and 3 layers (an outer layer of small cells with distinct chloroplasts, 2 pseudoparenchymatous, large, round, and mainly hyaline cell layers). Most characteristics were in agreement with the description of Jaoa bullata, 1 of 2 species belonging to the genus Jaoa. Phylogenetic analysis based on 3 loci (rbcL, nrDNA 18S, and ITS) placed the alga in a clade with a sample identified as Jaoa prasina from a Chinese population, but with a considerable sequence distance, a result suggesting it might be a separate species. The Lake Garda alga is a siphonaxanthin-type species that possesses only nonP lipids as structural components of chloroplast (monogalactosyl diacylglycerols, digalactosyl diacylglycerols, and sulfoquinovosyl diacylglycerols) and other cell membranes (diacylglyceryl-N, N, N-trimethylhomoserine lipids). The alga is easily detected with the naked eye, occupies a characteristic belt in the eulittoral zone, and can be found wherever hard substrata are available. Neither this species nor similar taxa are mentioned in historical (end of the 19 th century) papers on benthic algae of Lake Garda, so the alga probably was introduced to the lake in relatively recent times. This alga belongs to a little-known genus, but is easily observed and was discovered in Italy's largest lake, a tourist resource of outstanding importance. It is a striking example of the degree to which lake benthic algae are understudied in many areas.

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Section: Observations On the Lake Phytobenthosmentioning

confidence: 99%

The benthic chlorophyte genus Jaoa (Ulvales), a putative China endemic, in Lake Garda, Italy: ecology, taxonomy, and molecular analyses

et al. 2014

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“…Periphyton are often easily visible from the shoreline, react rapidly to changing conditions, and play a critical role in many lake processes including nutrient cycling, energy flow, and food web interactions (Axler & Reuter, 1996;Vadeboncoeur & Steinman, 2002;Denicola & Kelly, 2013). Changes in benthic algal biomass can be used to distinguish areas of environmental stress, where biomass in a part of the lake shoreline deviates from the normal range of variability (Lambert et al, 2008;Spitale et al, 2014). Due to their role as an indicator and their importance for lakeecosystem health, it is important to evaluate temporal and spatial variability in this community.…”

Section: Introductionmentioning

confidence: 99%

Variability in periphyton community and biomass over 37 years in Lake Tahoe (CA-NV)

et al. 2021

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Nuisance periphyton blooms are occurring in oligotrophic lakes worldwide, but few lakes have documented changes in biomass through periphyton monitoring. For decades periphyton has caused concern about oligotrophic Lake Tahoe’s nearshore water quality. To determine whether eulittoral periphyton increased in Lake Tahoe, measures of biomass and dominant communities at 0.5 m below lake level have been monitored regularly at nine shoreline sites starting in 1982, with up to 54 additional sites monitored annually at peak biomass. Lake-wide, this metric of periphyton biomass has not increased since monitoring began. Biomass decreased at many sites and increased at one. Periphyton biomass peaked in March and was low in the summer lake-wide. The northern and western shores had higher biomass than the eastern and southern shores. Biomass varied with lake level. High biomass occurred at sites regardless of urban development levels. As increasing periphyton at Lake Tahoe was first cited in scientific literature in the 1960s, it is possible that periphyton increased prior to our monitoring program. A dearth of published long-term monitoring data from oligotrophic lakes with reported periphyton blooms makes it difficult to determine the extent of this issue worldwide. Long-term nearshore monitoring is crucial for tracking and understanding periphyton blooms.

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“…Naeema and Carolien (2015) suggested that the process of urbanization would inevitably exacerbate environmental degradation. Arunprakash and Giridharan (2014), Mansour and Nazrul Islam (2013), and Daniel S et al (2014) studied the negative effects of urbanization with regard to a city's water environment, climatic change, biological species distribution, etc. Puay and Abdul (2014) studied Singapore's urban ecosystem development between 1991 and 2012.…”

Section: Introductionmentioning

confidence: 99%

Influential intensity of urban agglomeration on evolution of eco-environmental pressure: a case study of Changchun, China

Liu

Zhang

et al. 2017

Chin. Geogr. Sci.

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Urbanization effects on shoreline phytobenthos: a multiscale approach at lake extent

Cited by 12 publications

References 36 publications

The benthic chlorophyte genus Jaoa (Ulvales), a putative China endemic, in Lake Garda, Italy: ecology, taxonomy, and molecular analyses

The benthic chlorophyte genus Jaoa (Ulvales), a putative China endemic, in Lake Garda, Italy: ecology, taxonomy, and molecular analyses

Variability in periphyton community and biomass over 37 years in Lake Tahoe (CA-NV)

Influential intensity of urban agglomeration on evolution of eco-environmental pressure: a case study of Changchun, China

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