Determinants of plant species richness in different wetland types along a hydrological gradient: implication for conservation

Shi, J.; Ma, K.; Wang, J.; Zhang, Y.; Zhao, J.

Artykuł - szczegóły

Tytuł artykułu

Determinants of plant species richness in different wetland types along a hydrological gradient: implication for conservation

Autorzy

Shi J. , Ma K. , Wang J. , Zhang Y. , Zhao J.

Wybrane pełne teksty z tego czasopisma

http://www.miiz.waw.pl/index.php/pl/wydawnictwa/polish-journal-of-ecology

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Warianty tytułu

Języki publikacji

Abstrakty

The loss of biodiversity caused by wetland degradation is a hot issue in ecology. It is known that hydrological degradation is the primary reason resulting in wetland degradation, but little is known about the relationship between plant species richness and environmental factors in different wetland types along a hydrological gradient. According to the gradient from high to low water level, wetland remnants in the Sanjiang Plain of northeast China were classified into three wetland types, which were permanently inundated marshes (PIM), seasonally inundated marshes (SIM) and wet meadows (WM) respectively. In this paper, we aimed to identify the determinants of plant species richness in the three wetland types and discern the transition of the determinants along a hydrological gradient. Plant species richness as well as area, habitat heterogeneity and resource availability was investigated in 51 wetland remnants, which were composed of 6 PIM, 25 SIM and 20 WM. Averagely, the area of wetland remnants occupied by PIM, SIM and WM was 0.35 ± 0.17 ha, 2.81 ± 2.88 ha and 1.34 ± 1.18 ha respectively. Aggregating the species in each wetland type, there were 67, 244 and 170 species recorded in PIM, SIM and WM. The determinants of species richness varied in different wetland types: standing water depth in PIM, area and water heterogeneity in SIM, and soil fertility and area in WM. With the decreasing water level, the influence of hydrological condition on species richness in the three wetland types declined while the impact of area and soil fertility gradually increased. Thus, hydrological condition was probably responsible for the transition of the determinants of species richness in different wetland types. Moreover, the habitat specialists of wetland would be lost when PIM or SIM degraded to WM. In order to conserve and restore plant diversity, specific measures should be taken including preventing area loss for all wetland remnants, managing the hydrological process for PIM and SIM, and regulating soil nutrient for WM.

Słowa kluczowe

relacja powierzchnia-gatunek bogactwo gatunkowe heterogeniczność siedlisk dostępność zasobów degradacja terenów podmokłych nizina Sanjiang Chiny

species-area relationship species richness habitat heterogeneity resource availability wetland degradation Sanjiang Plain China

Wydawca

Museum and Institute of Zoology, Polish Academy of Sciences

Czasopismo

Polish Journal of Ecology

Rocznik

2013

Tom

Vol. 61, nr 4

Strony

645--654

Opis fizyczny

Bibliogr. 42 poz., il.

Twórcy

autor

Shi J.

College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China
Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China

autor

Ma K.

mkm@rcees.ac.cn

Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

autor

Wang J.

Institute of Natural Resource and Ecology, Heilongjiang Academy of Sciences, Harbin 150040, China

autor

Zhang Y.

State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

autor

Zhao J.

Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China

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Bibliografia

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