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Hambright, K. David; Bar-Ilan, Igal; Eckert, Werner

doi:10.1023/a:1008484506420

Cited by 18 publications

(4 citation statements)

References 22 publications

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“…Temperature indicators demonstrated a slight increase in eurythermic species that reflect warming waters due to significant water swallowing and a decrease in the area of the reservoir. In this regard, we confirmed that the Hula Nature Reserve is considered to the subtropical lakes more than to boreal [58,63]. In this case, it was very important to reveal some indicators that characterize the warm-water environment of the lake.…”

Section: Discussionsupporting

confidence: 72%

“…We found ourselves in a difficult position in determining changes in the ecosystem of Lake Hula over such a long period since we did not have synchronous data on environmental parameters with data on algae and cyanobacteria communities. As is known, both data sets are needed to determine the state of an ecosystem [56], especially for the purpose of conservation and management of lakes [51,57]; moreover, it is chemical data that usually receive more attention in assessing ecosystem dynamics [58]. Indices showing changes in trophic status are mostly based on hydrochemical variables [59][60][61], which in our case is practically not available.…”

Section: Discussionmentioning

confidence: 99%

“…It means that the lake ecosystem periodically can be stressed by environmental factors but successfully avoid it. The analysis of a few aquatic ecosystems such as the Lower Jordan [64], Qishon [65], and Hadera [66] rivers, and especially the Upper Jordan River catchment basin [58,67,68] shows that ecosystem stress by nutrients inflow, toxic substances, salinity or temperature can be revealed more effective by bioindicators than by chemical methods.…”

Section: Discussionmentioning

confidence: 99%

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Algae and Cyanobacteria Diversity and Bioindication of Long-Term Changes in the Hula Nature Reserve, Israel

Barınova

Alster

2021

Diversity

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Lake Hula, the core of one of the most extensive wetland complexes in the Eastern Mediterranean, was drained in 1951–1958. However, about 350 hectares of papyrus marshes were allocated in the southwestern part of the previous lake and became the Hula Nature Reserve status, the first of two wetlands in Israel included in the Ramsar List of Wetlands of International Importance. The list of algae and cyanobacteria species of Lake Hula was compiled by us for the first time based on data from publications of 1938–1958, as well as our research in the Hula Nature Reserve, obtained within the framework of the monitoring program for 2007–2013. The list includes 225 species and intraspecies of algae and cyanobacteria belonging to eight phyla. The dynamics of the species richness of algae and cyanobacteria flora for 1938–2013 are shown. Species-bioindicators of water quality have been identified, and the change in their composition by ecological groups for a period of about a hundred years has been shown. Based on the species richness of algae communities, water quality indices were calculated with particular attention to changes in trophic status during the study period. The algae flora of Lake Hula and Hula Nature Reserve was found to be similar, but bioindication has revealed an increase in salinity and organic pollution in recent years.

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Section: Discussionsupporting

confidence: 72%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Algae and Cyanobacteria Diversity and Bioindication of Long-Term Changes in the Hula Nature Reserve, Israel

Barınova

Alster

2021

Diversity

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“…Lake Agmon (Figure 1) receives its water from the Jordan River, which brings low-saline, P-enriched water originating from Mount Hermon. More saline waters that are also enriched with sulfate, iron, calcium, and humic acids flow into the lake from a canal that drains the peatlands north of Agmon [3]. Additional input of peat waters is via groundwater seepage [4].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Partitioning of Primary Production and Biomass between Phytoplankton and Metaphyton in a Shallow Lake Agmon, Hula Valley (Israel)

Yehoshua¹,

Gophen²

2018

OJMH

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Agmon is a small, shallow man-made lake (area: 1.1 km 2 ; mean depth 0.45 m), excavated in the peat soils of the Hula Valley in northern Israel, that was filled with water in August 1994. We followed the seasonal variations in phytoplankton and metaphyton biomass, primary production and related environmental conditions between December 1995 and July 1997. Water temperature ranged between 9.5˚C -30.8˚C; pH ranged between 7.2 -8.6. The algae in Lake Agmon were characterized by seasonal alterations between summer-fall phytoplankton blooms and spring proliferation of benthic algal mats, with a winter clear-water phase. Chlorophyll a content in the water, as a measure of planktonic algal biomass, was low in winter (1.75 -5 μg•L −1 ) and high in summer (>100 μg•L −1 ), when planktonic cyanobacteria (Microcystis spp.) bloomed. Metaphyton biomass varied between 3.5 and 970 g•dry•wt•m −2 , with chlorophyll a content ranging from 5 -701 mg•m −2 . The dominant benthic algal genera were Spirogyra

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Using eDNA presence/non‐detection data to characterize the abiotic and biotic habitat requirements of a rare, elusive amphibian

et al. 2022

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The environmental DNA (eDNA) approach has already been established as a valuable tool for the detection and monitoring of rare and elusive species. However, its application is not limited to assessing whether or not a species is present in a given area. In this study, we collected environmental data from 48 aquatic locations that had previously been investigated in an eDNA‐based study. We sought to determine the abiotic and biotic factors that could explain the presence or non‐detection of Hula painted frog DNA at those locations, in order to characterize this rare species’ little studied habitat requirements. We found that the detection probability of this species decreased substantially with increasing phosphorus loads as well as in the presence of the wetland plant Lythrum salicaria. By contrast, the detection probability increased markedly when Phragmites australis or Ludwigia stolonifera constituted part of the dominant aquatic vegetation. Our results expand the knowledge on this elusive frog species and contribute valuable information for future habitat restoration plans. They further show that eDNA data can also be used to characterize the putative habitats of species where such data are scarce or even totally lacking.

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Untitled

Cited by 18 publications

References 22 publications

Algae and Cyanobacteria Diversity and Bioindication of Long-Term Changes in the Hula Nature Reserve, Israel

Algae and Cyanobacteria Diversity and Bioindication of Long-Term Changes in the Hula Nature Reserve, Israel

Seasonal Partitioning of Primary Production and Biomass between Phytoplankton and Metaphyton in a Shallow Lake Agmon, Hula Valley (Israel)

Using eDNA presence/non‐detection data to characterize the abiotic and biotic habitat requirements of a rare, elusive amphibian

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