Percy Sladen Expedition to Lake Huleh, Palestine.

Washbourn, Roger; Jones, R. F. J.

doi:10.1111/j.1095-8312.1937.tb01191.x

Cited by 4 publications

(4 citation statements)

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“…This floristic composition resulted from phytogeographic meeting zones between Holarctic and Palaearctic speciation. The wetland habitat was predominated by thickets of Cyperus papyrus and the open clear waters by Nymphaea alba and Nuphar lutea [17,23]. The primary objective of the Lake Agmon-Hula creation project was nutrient collection and removal from the Kinneret input loads.…”

Section: Discussionmentioning

confidence: 99%

“…The floristic (terrestrial, aquatic, and riparian) distribution in the Hula Valley has been widely documented. Nevertheless, the documented results of earlier studies about facilitating interaction between nutrient availabilities and plant distribution are partial with regard to complicated ecosystem interactions such as those observed in Lake Agmon-Hula [9,[17][18][19][20][21][22][23][24][25]. There are reciprocity interactions such as the mutual influence between plants' nutrient availability and physicochemical factors.…”

Section: Discussionmentioning

confidence: 99%

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Water Composition, Biomass, and Species Distribution of Vascular Plants in Lake Agmon-Hula (LAH) (1993–2023) and Nearby Surroundings: A Review

Gophen

2024

Water

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A significant change to the land cover in the Hula Valley was carried out during the 1950s: A swampy area densely covered by aquatic vegetation and the old shallow lake Hula were drained. The natural shallow lake and swamps land cover were converted into agricultural development land use in two stages: (1) Drainage that was accomplished in 1957; (2) Implementation of the renovated hydrological system structure, including the newly created shallow Lake Agmon-Hula (LAH), was completed in 2007. The long-term data record of the restored diversity of the submerged and emerged aquatic plant community, and its relation to water quality in the newly created shallow Lake Agmon-Hula LAH, was statistically evaluated. Internal interactions within the LAH ecosystem between aquatic plants and water quality, including nitrification, de-nitrification, sedimentation, photosynthetic intensity, and plant biomass and nutrient composition, were statistically evaluated. The plant community in LAH maintains a seasonal growth cycle of onset during late spring–summer and dieback accompanied by decomposed degradation during fall–early winter. The summer peak of aquatic plant biomass and consequent enhancement of photosynthetic intensity induces a pH increase during daytime and carbonate precipitation. Nevertheless, the ecosystem is aerobic and sulfate reduction and H2S concentration are negligible. The Hula reclamation project (HP) is aimed at the improvement of eco-tourism’s integration into management design. The vegetation research confirms habitat enrichment.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Water Composition, Biomass, and Species Distribution of Vascular Plants in Lake Agmon-Hula (LAH) (1993–2023) and Nearby Surroundings: A Review

Gophen

2024

Water

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“…The results of Species Richness Distribution (SRD) for plants, [17][18][19][20][21][22][23][24][25][26][27][28], birds [29][30][31][32][33][34], and fish [35,36] are given as the number of species per 10 2 ha [17][18][19][20][21][22][23][24][25][26][27][28] and Biodiversity Index (BDI) given as the ratio between group (plant, bird, fish) and total species number Before (BEF) and After (AFT) drainage are given in Table 4: Prior to the Hula drainage 132 bird species belonging to 30 families were documented in the Hula Valley whilst, as of the early 1990s, only 3 species were not recorded after the drainage [12]. During the post-drainage era, the avifaunal richness indicated during 1994, 1995 and 1996 consisted of a total number of recorded species of 135, 120, and 153, respectively.…”

Section: Species Richnessmentioning

confidence: 99%

“…A compilation of the pre-drainage studies about vascular plant distribution in the Hula Valley [17][18][19][20][21][22][23][24][25][26][27][28] initiated a list of 53 named species as documented by Zohary and Orshansky (1947). They [17] defined different types of Hula Valley vegetation as 9 plant associations.…”

Section: Vascular Plant Species Richnessmentioning

confidence: 99%

Biodiversity during Pre and Post Hula Valley (Israel) Drainage

Gophen

2023

Diversity

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The natural ecosystem of the Hula Valley (Israel) comprising shallow old lake Hula, swamps and partly cultivated land was altered by drainage. The drained area was converted for agricultural development. The natural wetland–lake ecosystem was demolished. A reduction in biodiversity and a negative impact on the downstream Lake Kinneret water quality were predicted. Forty years later, a reclamation project was implemented aimed at renovation of the hydrological conditions, and agricultural development was improved. The recorded inventory of plants, birds and fish pre- and post-drainage and reclamation was comparatively evaluated resulting in an indication of Biodiversity Index (BDI) and Species Richness (SR) enhancement in the present. It is suggested that the resulting increase in ecological habitat varieties suitable for terrestrial, semi-aquatic and aquatic organisms enhanced the biodiversity. Nevertheless, it is not impossible that the newly created conditions which enhanced the biodiversity require a risk assessment to ensure the long-term sustainability of the integration of agriculture and nature.

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Species-environment relationships and diversity of liverworts in Israel

Bischler¹

2002

Israel Journal of Plant Sciences

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A data set comprising 275 sampling plots of Israeli liverworts, each consisting of a coded list of twenty environmental variables and a species list, was investigated with multivariate analyses. A factorial map summarizes the data and provides a survey of the main ecological preferences of the Israeli liverwort species. The species proved to be linked to specific biotopes. Their distribution in the factorial space depends predominantly on climate, altitude, vegetation, and shelter of habitats. Life history traits are discussed to explain which ecological conditions are best for survival and dispersal. Floristic richness is low compared with the whole Mediterranean region. Species richness and size of sampling plots correlate with the climatic gradient, lowest in the arid, highest in the Mediterranean zones of Israel. The species able to survive in the arid zone also grow under less severe climatic conditions, whereas many species common in the Mediterranean zone are absent from the arid zone. The Israeli liverworts have wide geographical distributions, not only in the whole Mediterranean region, but also in other continents. Endemics are absent. Species with present-day tropical chorotypes are most common. The liverwort flora appears as a mixture of predominantly tropical and a few northern colonizers that did not differentiate after their settlement. The genetic structure of liverwort populations is discussed in order to explain the scarcity of endemics.

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Percy Sladen Expedition to Lake Huleh, Palestine.

Cited by 4 publications

References 0 publications

Water Composition, Biomass, and Species Distribution of Vascular Plants in Lake Agmon-Hula (LAH) (1993–2023) and Nearby Surroundings: A Review

Water Composition, Biomass, and Species Distribution of Vascular Plants in Lake Agmon-Hula (LAH) (1993–2023) and Nearby Surroundings: A Review

Biodiversity during Pre and Post Hula Valley (Israel) Drainage

Species-environment relationships and diversity of liverworts in Israel

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