scholarly journals Applying diversity index and dominant species in research and selection of some indigenous plant species to absorb Pb, Zn

2017 ◽  
Vol 8 (4) ◽  
pp. 240-246
Author(s):  
Thi Yen Ta ◽  
Thi Mai Thao Pham
Keyword(s):  
Plant Species ◽  
Dominant Species ◽  
Biological Diversity ◽  
Diversity Index ◽  
Biological Indicators ◽  
Cell Counting ◽  
Native Plant ◽  
Bidens Pilosa ◽  
Native Plant Species ◽  
Ipomoea Aquatic

The study was carried out at Dai Dong and Chi Dao communes, Van Lam District, Hung Yen Province. The biological diversity indexes and dominance index of species were used to identify native plant species which have the ability to absorb Pb and Zn. The results were verified by applying methods such as plant classification, quadrat cell counting, biological indicators and chemical analysis. Results showed that there are five species of plants with the highest dominant index calculated due to number of individuals in the study area including Bidens pilosa L (33.03%), Acroceras munroanum (8.14%), Commelina coelestis (7.83%), Carex capillacea (5.41%), Ipomoea aquatic (5.26%). Verified results showed that Bidens pilosa L, Acroceras munroanum, Commelina coelestis, Ipomoea aquatic can be used to treat Pb with the absorption concentration of 380 mg/kg, 288 mg/kg, 270 mg/kg, 223 mg/kg, respectively. Only Commelina coelestis can absorb Zn with the highest concentration of 73mg/kg. In summary, Pb absorption of dominant species in the study area is higher than the absorption of Zn. Nghiên cứu được thực hiện tại hai xã Đại Đồng và xã Chỉ Đạo, huyện Văn Lâm, tỉnh Hưng Yên nhằm xác định một số loài thực vật bản địa có khả năng hấp thụ Pb, Zn bằng cách sử dụng chỉ số đa dạng sinh học và chỉ số ưu thế loài. Kết quả được kiểm chứng bằng các phương pháp như phân loại thực vật, đếm ô quadrat, sử dụng chỉ số sinh học và phân tích hóa học. Kết quả cho thấy có có năm loài thực vật có chỉ số ưu thế cao nhất tính theo số lượng cá thể trong khu vực nghiên cứu là: Đơn buốt (33,03 %), Cỏ lá tre (8,14 %), Thài lài (7,83 %), Kiết tóc (5,41 %), Rau muống (5,26 %). Kết quả phân tích kiểm chứng thấy Đơn buốt, Cỏ lá tre, Thài lài, Rau muống có khả năng xử lý Pb với giá trị lần lượt là 380 mg/kg, 288 mg/kg, 270 mg/kg, 223 mg/kg. Trong khi đó chỉ có Thài lài là có khả năng hấp thu Zn với giá trị cao nhất là 73 mg/kg. Nhìn chung khả năng hấp thu Pb của các loài ưu thế tại khu vực nghiên cứu cao hơn so với khả năng hấp thu Zn.

scholarly journals Effects of the invasive plant Xanthium strumarium on diversity of native plant species: A competitive analysis approach in North and Northeast China

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0228476
Author(s):  
Mazher Farid Iqbal ◽  
Ming-Chao Liu ◽  
Aafia Iram ◽  
Yu-Long Feng
Keyword(s):  
Species Richness ◽  
Plant Species ◽  
Plant Communities ◽  
Northeast China ◽  
Invasive Plant ◽  
Diversity Index ◽  
Diversity Indices ◽  
Xanthium Strumarium ◽  
Native Plant ◽  
Native Plant Species

Xanthium strumarium is native to North America and now has become one of the invasive alien species (IAS) in China. In order to detect the effects of the invader on biodiversity and evaluate its suitable habitats and ecological distribution, we investigated the abundance, relative abundance, diversity indices, and the number of the invasive and native plants in paired invaded and non-invaded quadrats in four locations in North and Northeast China. We also analyzed the effects of monthly mean maximum and minimum temperatures, relative humidity (%), and precipitations (mm). Strong positive significant (P < 0.01) correlation and maximum interspecific competition (41%) were found in Huailai between invaded and non-invaded quadrats. Shannon’s Diversity Index showed that non-invaded plots had significantly (P < 0.05) more diversified species than invaded ones. The significant (P < 0.05) Margalef’s Richness Index was found in Huailai and Zhangjiakou in non-invaded recorded heterogeneous nature of plant communities. Similarly, significant (P < 0.05) species richness found in Huailai and Zhangjiakou in non-invaded quadrats compared to invaded ones. Maximum evenness of Setaria feberi (0.47, 0.37), Seteria viridis (0.43) found in Fushun and Zhangjiakou recorded more stable in a community compared to other localities. Evenness showed positive relationship of Shannon Entropy within different plant species. The higher dissimilarity in plant communities found in Huailai (87.06%) followed by Yangyuan (44.43%), Zhangjiakou (40.13%) and Fushun (29.02%). The significant (P < 0.01) value of global statistics R (0.943/94.3%) showed high species diversity recorded in Huailai followed by Zhangjiakou recorded by non-metric multidimensional scaling and analysis of similarity between invaded and non-invaded plots. At the end it was concluded that the diversity indices reduced significantly (P < 0.05) in invaded quadrats indicated that native plant species become less diverse due to X. strumarium invasion. The degrees of X. strumarium invasion affected on species richness resulted to reduce diversity indices significantly in invaded quadrats.

scholarly journals The invasive Opuntia ficus-indica homogenizes native plant species compositions in the highlands of Eritrea

2020 ◽  
Author(s):  
Yohannes B. Tesfay ◽  
Juergen Kreyling
Keyword(s):  
Species Diversity ◽  
Species Composition ◽  
Plant Species ◽  
Native Species ◽  
Diversity Index ◽  
Native Plant ◽  
Opuntia Ficus Indica ◽  
Native Plant Species ◽  
Negative Effect ◽  
Dry Climates

Abstract Invasion by exotic species is recognized as one of the major threats to biodiversity. The effects of invasion by Opuntia ficus-indica (Cactaceae) on the species diversity, richness and composition of invaded communities were studied at three sites in the highlands of Eritrea, East Africa. This paper investigates whether the presence of O. ficus-indica causes a negative effect on the native biodiversity in a region rarely studied so far. The vegetation in invaded and uninvaded plots with similar habitat conditions was sampled and differences in the species composition, diversity and richness were compared between the plots. The overall plant species composition differed significantly with invasion by O. ficus-indica. The invasion by O. ficus-indica also led to a significant homogenization of community compositions. The species richness and Shannon diversity index did not differ significantly between the invaded and uninvaded plots. Nevertheless, we still detected species with significantly lower occurrence in the invaded plots (Psiadia punctulata), but also species which preferred invaded plots (Plectranthus hadiensis). We conclude that O. ficus-indica exerts a negligible effect on the species diversity and richness but that it affects species composition and that there are species which suffer due to its presence. Due to the continuous pressure of the invasion by O. ficus-indica on the species composition and dry climates, further homogenization in the native species diversity is to be expected in the future for the highlands of Eritrea.

Native plant species field evaluation in salt desert: good materials, bad situation

2015 ◽  
Vol 16 (2) ◽  
pp. 87-95 ◽  
Author(s):  
N. Grant-Hoffman ◽  
S. Parr ◽  
T. Blanke
Keyword(s):  
Plant Species ◽  
Field Evaluation ◽  
Native Plant ◽  
Native Plant Species ◽  
Salt Desert

Ten-year persistence of native plant species on a green roof in Northeast US

2017 ◽  
Vol 18 (3) ◽  
pp. 227-234
Author(s):  
Jessica D Lubell ◽  
Bryan Connolly ◽  
Kristina N Jones
Keyword(s):  
Plant Species ◽  
Green Roof ◽  
Native Plant ◽  
Native Plant Species ◽  
Northeast Us

ALTERED POLLINATION ECOLOGY OF A NATIVE PLANT SPECIES IN THE PRESENCE OF AN ATTRACTIVE NON-NATIVE PLANT SPECIES

Rhodora ◽  
10.3119/18-11 ◽  
2019 ◽  
Vol 121 (987) ◽  
pp. 159
Author(s):  
Adam J. Ramsey ◽  
Steven M. Ballou ◽  
Jennifer R. Mandel
Keyword(s):  
Plant Species ◽  
Pollination Ecology ◽  
Native Plant ◽  
Native Plant Species

scholarly journals Herbivory and dominance shifts among exotic and congeneric native plant species during plant community establishment

Oecologia ◽  
2015 ◽  
Vol 180 (2) ◽  
pp. 507-517 ◽  
Author(s):  
Tim Engelkes ◽  
Annelein Meisner ◽  
Elly Morriën ◽  
Olga Kostenko ◽  
Wim H. Van der Putten ◽  
...  
Keyword(s):  
Plant Species ◽  
Plant Community ◽  
Native Plant ◽  
Native Plant Species

Litter decomposition of exotic and native plant species of agricultural importance in Amazonian streams

Limnology ◽  
2021 ◽  
Author(s):  
Viviane Caetano Firmino ◽  
Leandro Schlemmer Brasil ◽  
Renato Tavares Martins ◽  
Raphael Ligeiro ◽  
Alan Tonin ◽  
...  
Keyword(s):  
Litter Decomposition ◽  
Plant Species ◽  
Native Plant ◽  
Native Plant Species

scholarly journals Biological and Host Range Characteristics of Lysathia flavipes (Coleoptera: Chrysomelidae), a Candidate Biological Control Agent of Invasive Ludwigia spp. (Onagraceae) in the USA

Insects ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 471
Author(s):  
Angelica M. Reddy ◽  
Paul D. Pratt ◽  
Brenda J. Grewell ◽  
Nathan E. Harms ◽  
Ximena Cibils-Stewart ◽  
...  
Keyword(s):  
Biological Control ◽  
Host Range ◽  
Plant Species ◽  
Biocontrol Agent ◽  
Biological Control Agent ◽  
Control Agent ◽  
Native Plant ◽  
Native Plant Species ◽  
The Usa ◽  
Physical And Chemical

Exotic water primroses (Ludwigia spp.) are aggressive invaders in aquatic ecosystems worldwide. To date, management of exotic Ludwigia spp. has been limited to physical and chemical control methods. Biological control provides an alternative approach for the management of invasive Ludwigia spp. but little is known regarding the natural enemies of these exotic plants. Herein the biology and host range of Lysathia flavipes (Boheman), a herbivorous beetle associated with Ludwigia spp. in Argentina and Uruguay, was studied to determine its suitability as a biocontrol agent for multiple closely related target weeds in the USA. The beetle matures from egg to adult in 19.9 ± 1.4 days at 25 °C; females lived 86.3 ± 35.6 days and laid 1510.6 ± 543.4 eggs over their lifespans. No-choice development and oviposition tests were conducted using four Ludwigia species and seven native plant species. Lysathia flavipes showed little discrimination between plant species: larvae aggressively fed and completed development, and the resulting females (F1 generation) oviposited viable eggs on most plant species regardless of origin. These results indicate that L. flavipes is not sufficiently host-specific for further consideration as a biocontrol agent of exotic Ludwigia spp. in the USA and further testing is not warranted.

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