scholarly journals Temporary freshwater wetlands floristics in central Mexico highlands

2018 ◽  
Vol 96 (1) ◽  
pp. 138 ◽  
Author(s):  
Tatiana Lobato-de Magalhães ◽  
Mahinda Martínez
Keyword(s):  
Species Richness ◽  
Life Form ◽  
Conservation Status ◽  
Life Forms ◽  
Freshwater Wetlands ◽  
Central Mexico ◽  
Anthropogenic Pressure ◽  
Temporary Wetlands ◽  
First Time ◽  
Economic Use

<p><strong>Background: </strong>Mexico has a high diversity of aquatic and subaquatic plants that occur between 1,000 and 2,500 m of elevation, although a larger proportion of aquatic plants is concentrated at lower altitudes. Temporary wetlands harbor close to 73 % of the aquatic species in Mexico. These systems are under a strong anthropogenic pressure and suffer constant degradation.</p><p><strong>Questions:</strong> i) How many species grow in highland temporary wetlands? ii) Are they floristically similar? iii) Is there a latitudinal pattern of species richness?</p><p><strong>Studied groups: </strong>Charophyta, Pteridophyta, Angiosperms.</p><p><strong>Study site and years of study:</strong> Central Mexico (39 wetlands) from 2015 to 2016.<strong></strong></p><p><strong>Methods: </strong>We collected in 39 temporary wetlands for two years. We made a presence/absence list of species per locality, and calculated floristic similarities and correlations between wetlands. We include data characterizing life form, plant use, and conservation status.</p><p><strong>Results:</strong> We found 126 species belonging to 80 genera and 38 families. The richest families were Cyperaceae, Asteraceae, and Poaceae. As to genera, <em>Eleocharis</em>, <em>Cyperus</em>, and <em>Juncus </em>had more species. Species with the widest distributions were <em>Persicaria mexicana</em>, <em>Marsilea mollis</em>, <em>Luziola fluitans</em>, <em>Heteranthera peduncularis</em>, and <em>Nymphoides fallax</em>.  We found five different life forms – all herbaceous, including 27 threatened species, 24 species with economic use, 48 endemic species, and 19 cosmopolitan species. In addition, we found 20 species recorded for the first time in some states included in our study, and two species of <em>Eleocharis</em> that might represent undescribed species. The richest wetland harbors 40 species, the poorest has only five. Wetlands were comparable to each other in species composition, and species richness increases towards the south.</p><p><strong>Conclusions:</strong> Temporary wetlands harbor a high floristic diversity and are similar to each other. Lower latitudes host higher numbers of species.</p>

scholarly journals FLORA DO ESTRATO HERBÁCEO DA RESTINGA DA PRAIA DO CAÚRA, SÃO JOSÉ DE RIBAMAR, MARANHÃO

2021 ◽  
Vol 29 (2) ◽  
Author(s):  
Aryana Vasque Frota Guterres ◽  
Ingrid Fabiana Fonseca Amorim ◽  
Antonio Fernando Costa da Silva ◽  
Eduardo Bezerra de Almeida Jr.
Keyword(s):  
Species Richness ◽  
Life Forms ◽  
First Time

Este estudo teve por objetivo registrar a flora do componente herbáceo da restinga da Praia do Caúra, apontando a riqueza, formas de vida e trazendo contribuições para o conhecimento florístico do litoral maranhense. O estudo foi desenvolvido na restinga da Praia do Caúra (02º33’14,20’’S, 44º02’13,99’’W), São José de Ribamar. Foram realizadas coletas mensais, do estrato herbáceo, entre 2015 a 2017, por meio de buscas exploratórias nos diferentes trechos darestinga. Foram identificadas 85 espécies, 68 gêneros e 28 famílias. As famílias mais representativas foram Fabaceae, com 16 espécies e Cyperaceae, com 12 espécies, seguido de Poaceae (9 spp), Asteraceae (6 spp), Euphorbiaceae e Passifloraceae, com 5 espécies, cada. A espécie Passiflora porophylla foi registrada pela primeira vez para o Maranhão. Foram identificados seis tipos de formas de vida (Caméfitos, Geófitos, Hemicriptófito, Holoparasita,Terófito e Trepadeira). Por fim, a riqueza registrada na área reforça a necessidade de manutenção da vegetação de restinga diante da perda da flora que vem acontecendo no local.Palavras-chave: Riqueza de espécies; Formas de vida; Costa maranhense; Nordeste. ABSTRACTThis paper aimed to record the flora of the herbaceous component of Praia do Caúra restinga, pointing out the richness, life-forms, and bringing contributions to the floristic knowledge of the coast of Maranhão state. The study was carried out in the Praia do Caúra restinga (02º33’14.20’’S, 44º02’13.99’’W), in the municipality of São José de Ribamar. Monthly collections of herbaceous strata were carried out between 2015 to 2017, through exploratory walks in the different stretches of the restinga. In the study area, 85 species, 68 genera and 28 families were identified. The most representative families were Fabaceae, with 16 species, and Cyperaceae, with 12 species, Poaceae (9 spp), Asteraceae (6 spp), Euphorbiaceae, and Passifloraceae, with 5 species, each. Passiflora porophylla was registered for the first time in Maranhão state. There were identified six types of life forms (chamaephytes, geophytes, Hemicryptophyte, Holoparasite, Terophyte and Vine. Therefore, the high number of speciesrecorded in the area reinforces the need to maintain restinga vegetation because of the loss of flora that has been happening in the area.Keywords: Species richness; Life-forms; Coast Maranhão; Northeast.

scholarly journals Endemic plants in the flora of Shutman (Sharri Mountain), Kosovo – an analysis of phytogeographical elements and life forms

2021 ◽  
Vol 30 (1) ◽  
pp. 1-11
Author(s):  
Haxhi Halilaj ◽  
◽  
Lirika Kupe ◽  
Avdyl Bajrami ◽  
Pirro Icka ◽  
...  
Keyword(s):  
Endemic Species ◽  
Conservation Status ◽  
Life Forms ◽  
Endemic Plants ◽  
Endemic Plant ◽  
Herbaceous Perennials ◽  
Floristic Elements ◽  
Endemic Plant Species ◽  
First Time ◽  
Distribution Record

This paper aims to present the diversity of endemic plants in the Shutman area and an analysis of chorological groups and life forms. The flora of Shutman comprises 31 endemic plant species. Among them, there are 20 Balkan endemics, 1 stenoendemic and 5 sub-endemic species. They belong to 20 genera and 13 families. The richest among the endemics are families Asteraceae and Caryophyllaceae, both with 4 species. All endemics are herbaceous perennials. Hemicryptophytes dominate among life forms, accounting for 58.06%. Most of the species are Balkan floristic elements (20 species or 64.52%), followed by Southeast European and South European floristic elements, both with 3 taxa (9.68%). A total of 27 species have national or international conservation status. Reporting of Ranunculus degenii Kümmerle & Jav. for the first time in Shutman makes this area the second distribution record of this plant in Kosovo.

scholarly journals Species richness of pteridophytes in a montane Atlantic rain forest plot of Southern Brazil

2005 ◽  
Vol 19 (3) ◽  
pp. 519-525 ◽  
Author(s):  
Vinícius Antonio de Oliveira Dittrich ◽  
Jorge Luiz Waechter ◽  
Alexandre Salino
Keyword(s):  
Species Richness ◽  
Rain Forest ◽  
Life Form ◽  
Life Forms ◽  
Forest Plot ◽  
Atlantic Rain Forest ◽  
Brazilian Atlantic Forest ◽  
Southern Brazil ◽  
Floristic Survey ◽  
Ombrophilous Forest

A floristic survey of pteridophytes (ferns and fern allies) was carried out in a 1ha plot in the Pico do Marumbi State Park, Morretes, State of Paraná, Southern Brazil. The study area is covered with a closed ombrophilous forest (Brazilian Atlantic Forest) and lies approximately 630 m in elevation. All species and life-forms of pteridophytes growing in the plot were registered and most of them were collected for taxonomic identification. A total of 81 species, belonging to 17 families were registered. The richest were Polypodiaceae (12 species), Hymenophyllaceae (11) and Lomariopsidaceae (11). The richest genera were Asplenium (ten species), Elaphoglossum (10) and Trichomanes (six). Life-form composition was: epiphytes (49 species), terrestrials (28), lithophytes (two), epiphytes/terrestrials/lithophytes (one) and epiphytes/lithophytes (one). No hemiepiphytes were found. Terrestrials included herbaceous (22 species), arborescent (four) and climbing (two). Species richness of the plot can be considered as high when compared to other neotropical sites.

scholarly journals Shifts in Riparian Plant Life Forms Following Flow Regulation

Forests ◽  
2020 ◽  
Vol 11 (5) ◽  
pp. 518 ◽  
Author(s):  
María D. Bejarano ◽  
Judith Sarneel ◽  
Xiaolei Su ◽  
Alvaro Sordo-Ward
Keyword(s):  
Species Richness ◽  
Relative Abundance ◽  
Life Form ◽  
Woody Species ◽  
Life Forms ◽  
River Regulation ◽  
Flow Regulation ◽  
Plant Life Forms ◽  
Plant Life ◽  
Riparian Plant

Flow regulation affects bordering riparian plant communities worldwide, but how different plant life forms are affected by river regulation still needs further research. In northern Sweden, we selected 10 rivers ranging from free-flowing to low, moderately, and highly regulated ones. In 94 reaches across those rivers, we evaluated the relative abundance of woody and herbaceous (i.e., graminoids and forbs) life forms, their species richness, and their relative presence. We also explored which, and to what extent, hydrological variables drove species assembly within each life form. The relative abundance and species richness of each life form decreased across river categories with increasing levels of regulation. This was particularly apparent in herbaceous life forms, and the most drastic decreases were observed in all life forms in moderately or highly regulated reaches. Additionally, when river regulation increased, the relative presence of many species from all life forms decreased. Unlike woody species, only a few new herbaceous species appeared in regulated reaches. A canonical correspondence analyses (CCA) revealed that a wide range of hydrological variables explained the occurrence of woody species, while fewer variables explained variation in the graminoid and forb life forms. We conclude that flow regulation and its intensity result into clear shifts in the relative abundance of different life forms, as well as in changes of within-group species richness and composition. Consequently, the modification of certain flow attributes in flow regulation schemes, as well as the intensity of these modifications, may alter the ratio between herbaceous and woody species, ultimately impacting the functions and benefits derived from each life form.

scholarly journals The fingernail clams (Bivalvia: Veneroida: Sphaeriidae) of Morocco: Diversity, distribution and conservation status

2021 ◽  
Vol 9 ◽  
Author(s):  
Hanane Rassam ◽  
Mohamed Ghamizi ◽  
Hassan Benaissa ◽  
Catharina Clewing ◽  
Christian Albrecht
Keyword(s):  
Species Richness ◽  
Conservation Status ◽  
Shell Morphology ◽  
General Distribution ◽  
Ecological Features ◽  
Morphometric Analyses ◽  
The Status ◽  
Conservation Plan ◽  
Fingernail Clams ◽  
First Time

In Morocco, many uncertainties surround the current diversity and distribution of the bivalve family Sphaeriidae. Such information, including taxonomy and conservation status, are vital for further studies to improve the knowledge of this family in Morocco and represents the first step towards the development of a national conservation plan for all freshwater bivalves. Between 2016 and 2019, several investigations were carried out to assess the diversity and distribution of Sphaeriidae in the different basins of Morocco, covering different types of habitat (lakes, springs, rivers and small ponds). The identification of specimens and their morpho-ecological features was based on morphological and morphometric analyses. The data on the general distribution of the collected species allowed the evaluation of their conservation status as well. The shell morphology and morphometric analyses revealed the existence of five species belonging to the genus Pisidium [P. casertanum (Poli, 1791), P. (cf.) personatum Malm, 1855, P. subtruncatum Malm, 1855, P. amnicum (O. F. Müller, 1774) and Pisidium sp.] and one species to the genus of Musculium [M. lacustre (O. F. Müller, 1774)]. Sphaeriidae were found in all Moroccan basins, except Bouregreg and Sakia El Hamra-Oued Eddahab Basins. The results showed that Sebou Basin was the species richest with the occurrence of the five species, while Loukkos and Sous-Massa Basins had the lowest-species richness with one species only. The conservation status of sphaeriids in Morocco was evaluated for the first time and resulted in P. (cf.) personatum and P. subtruncatum being proposed as Least Concern and Vulnerable, respectively, while the status of Regionally Extinct is suggested for both species P. amnicum and M. lacustre. First evaluation of the diversity and species richness of the family Sphaeriidae in Morocco with an assignment of an updated conservation status of the recorded species.

scholarly journals Bryophyte diversity patterns in flooded and tierra firme forests in the Araracuara Region, Colombian Amazonia

2004 ◽  
Vol 25 (1) ◽  
pp. 117-126
Author(s):  
Juan C. Benavides ◽  
Alvaro Idarraga ◽  
Esteban Alvarez
Keyword(s):  
Species Richness ◽  
Habitat Use ◽  
Correspondence Analysis ◽  
Life Form ◽  
Life Forms ◽  
Species Assemblages ◽  
Species Assemblage ◽  
Forest Types ◽  
Independence Test ◽  
Tierra Firme

We investigated patterns of bryophyte species richness and composition in two forest types of Colombian Amazonia, non-flooded tierra firme forest and floodplain forest of the Caquetá River. A total of 109 bryophyte species were recorded from 14 0.2 ha plots. Bryophyte life forms and habitats were analyzed, including the canopy and epiphylls. Bryophyte species did not show significant differences between landscapes but mosses and liverworts were different and with opposite responses balancing the overall richness. Independence test showed differences in both life form and habitat use distribution between the two forest types with more fan and mat bryophytes species in the floodplains, and more epiphytic liverworts in the tierra firme forest. Correspondence analysis showed differences in the bryophyte species assemblage between the two forest types where they may be responding to the higher humidity provided by the flooding. Despite of, the environmental differences detected, epiphyll species assemblages were not strongly affected. Apparently, epiphyll habitat is stressful enough to hide the environmental differences between the flooded and Tierra firme forests.

Dwindling status of Epimedium Elatum (Morren & Decne) and its geographical distribution in Kashmir Himalaya, India

2018 ◽  
pp. 47-52
Keyword(s):  
Medicinal Plant ◽  
Biological Activities ◽  
Conservation Status ◽  
Natural Populations ◽  
Culture Techniques ◽  
Kashmir Himalayas ◽  
Near Future ◽  
First Time ◽  
Tissue Culture Techniques

Epimedium elatum (Morren & Decne) of family Berberidaceace is a rare perennial medicinal plant, endemic to high altitude forests of Northwestern Himalayas in India. Ethnobotanically, it has been used as an ingredient for treatment of bone-joint disorders, impotence and kidney disorders in Kashmir Himalayas. Phytochemically, it is rich in Epimedin ABC and Icariin; all of these have been demonstrated to possess remarkable biological activities like PDE-5 inhibition (treatment of erectile dysfunction), anticancer, antiosteoporosis antioxidant and antiviral properties. The present investigation reports its traditional usage, comprehensive distribution and conservation status from twenty ecogeographical regions in Kashmir Himalayas, India. The species was reported from Gurez valley for the first time. Numerous threats like excessive grazing, deforestration, habitat fragmentation, tourism encroachment, landslides and excessive exploitation have decreased its natural populations in most of the surveyed habitats. Consequently, its existence may become threatened in near future if timely conservation steps are not taken immediately by concerned stakeholders involved in medicinal plant research. Moreover, use of plant tissue culture techniques is recommended for development of its in vitro propagation protocols. Therefore, introduction of this medicinal plant in botanical gardens, protected sites and development of monitoring programmes are needed for its immediate conservation in Northwestern Himalayas, India.

Beaucarnea olsonii (Ruscaceae), a new species of ponytail palm from southwestern Puebla, Mexico

Phytotaxa ◽  
2016 ◽  
Vol 286 (1) ◽  
pp. 13
Author(s):  
VANESSA ROJAS-PIÑA ◽  
LEONARDO O. ALVARADO-CÁRDENAS
Keyword(s):  
New Species ◽  
Endemic Species ◽  
Conservation Status ◽  
Deciduous Forests ◽  
Central Mexico ◽  
Distribution Map ◽  
Southern Central ◽  
Tropical Deciduous Forests ◽  
A New Species

Beaucarnea olsonii is described and illustrated from tropical deciduous forests of SW Puebla, Mexico. The new species can be distinguished from other Beaucarnea species by its massively swollen base that abruptly tapers into slender branches, by its conspicuously long stigma, and by its pedicel articulation that occurs at 2/3 of the length of the pedicel below the flower. With this new addition, the total number of endemic species of Beaucarnea for Mexico increases to 10, making this country the greatest center of diversification and endemism for the genus. We also provide a distribution map and a conservation status recommendation for the new species, as well as a key to the Beaucarnea species of southern central Mexico.

Species richness, distribution pattern, and conservation status of amphibians in Cross River National Park, south‐eastern Nigeria

Biologia ◽  
2021 ◽  
Author(s):  
Lotanna Micah Nneji ◽  
Adeniyi C. Adeola ◽  
Babatunde E. Adedeji ◽  
Omotoso Olatunde ◽  
Abiodun B. Onadeko ◽  
...  
Keyword(s):  
Species Richness ◽  
Distribution Pattern ◽  
National Park ◽  
Conservation Status ◽  
Cross River ◽  
South Eastern

Variation in longevity and traits of leaves among co-occurring understorey plants in a tropical montane forest

2008 ◽  
Vol 24 (2) ◽  
pp. 121-133 ◽  
Author(s):  
Satomi Shiodera ◽  
Joeni S. Rahajoe ◽  
Takashi Kohyama
Keyword(s):  
Life Form ◽  
Census Data ◽  
Condensed Tannin ◽  
Leaf Traits ◽  
Life Forms ◽  
Montane Forest ◽  
Cox Proportional Hazards ◽  
Leaf Longevity ◽  
Tropical Montane Forest ◽  
Leaf Mass Per Area

Abstract:The relationship between leaf longevity and other leaf traits was compared among different life-form categories (trees, herbs, climbers and epiphytes) of 101 plant species in a tropical montane forest on Mt. Halimun, West Java, Indonesia. We applied the Cox proportional hazards regression to estimate the leaf longevity of each species from 30 mo of census data. We examined whether estimated longevity was explained by either species life-form categories, taxonomic groupings (eudicots, monocots, magnoliids and chloranthales, and ferns) or such leaf traits as leaf area, leaf mass per area (LMA), mass-based leaf nitrogen, penetrometer reading, condensed-tannin-free total phenolics and condensed tannin. There was a wide-ranged interspecific variation in leaf longevity, mostly 10–50 mo, similarly across life-form categories. LMA showed a strong positive influence on leaf longevity. We found that relationships between leaf longevity and some leaf traits were different among various life forms. Trees tended to have high LMA, while climbers tended to have low LMA at the same leaf longevity. We hypothesize that such difference among life forms reflects shoot architecture characteristics. Multi-shoot trees with branching architecture need to have self-supporting leaves, whereas semi-epiphytic climbers can maintain relatively low biomass investment to leaves hanging or relying upon the mechanical support from host plants.

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