scholarly journals Pleistocene plants from Zarzal Formation, middle valley of the Cauca River Basin, Colombia

2021 ◽  
Vol 24 (2) ◽  
pp. 104-119
Author(s):  
Maria Alejandra Rojas-Granada ◽  
Arnol Cardozo-Rueda ◽  
Carlos Alberto Agudelo Henao ◽  
Juliana Guzmán ◽  
Paula Andrea Sucerquia Rendon
Keyword(s):  
River Basin ◽  
Plant Association ◽  
Santa Barbara ◽  
Lacustrine Environment ◽  
Plant Associations ◽  
Valle Del Cauca ◽  
Leaf Impressions ◽  
Volcanic Influence ◽  
Central Cordillera ◽  
Lacustrine Deposit

We report macro and meso palaeobotanical records from the Zarzal Formation, in the Cauca River Depression, and the Quindío-Risaralda Basin between the Western and the Central Cordilleras of Colombia. The fossils correspond to leaves and seeds obtained from layers of mudstones, diatomites, and tuffaceous sandstones deposited in the inter-Andean valleys of Cauca and La Vieja rivers, separated by the Serranía Santa Bárbara ridge between the Valle del Cauca and Quindío departments. The sediments of the Pleistocene Zarzal Formation were deposited in a fluvial-lacustrine environment, with volcanic influence originated in the Central Cordillera to the east of the depositional area. The study here presented allowed the identification of thirteen morphotypes of leaf impressions grouped in six Angiosperm families: Poaceae?/Cyperaceae? and Araceae of the Monocots group, Melastomataceae, Fabaceae and Lauraceae belonging to the Eudicots group and one family of Lycopsida: Thelypteridaceae. On the other hand, very well-preserved silicified micro-seeds were grouped in eight morphotypes, belonging to the botanical groups Cyperaceae and Asteraceae. The fossils found allowed us to identify two types of plant associations that exhibit paleofloristic richness. In the Cauca River Basin, an autochthonous to parautocthonous plant association could correspond to a sub-Andean gallery forest, whilst in the La Vieja River Basin a parautocthonous plant association indicates a swamped floodplain. Keywords: paleoflora, leaves, seeds, Cauca River, La Vieja River, lacustrine deposit.

ETUDE AGRO-ECOLOGIQUE DANS LE COMTE DE RIVIERE-DU-LOUP: ASPECT ECOLOGIQUE

1978 ◽  
Vol 58 (1) ◽  
pp. 117-128
Author(s):  
J. M. DESCHENES ◽  
J. C. ST-PIERRE
Keyword(s):  
Ecological Study ◽  
Ecological Factors ◽  
Vegetation Changes ◽  
Plant Association ◽  
Vegetation Survey ◽  
Land Utilization ◽  
Red Fescue ◽  
Plant Associations ◽  
Ecological Habitat ◽  
Successional Stages

Intensive studies of soil and vegetation were performed in Rivière-du-Loup County to identify various plant associations of meadows and pastures, describe the successional trends of each ecological habitat and establish a relationship between plant associations and various environmental factors. After vegetation survey and analysis, four plant associations and their successional trends were described. Each plant association was identified by the dominant species at the most advanced stage of secondary succession: (1) red fescue-bent grass association, (2) red fescue-Lindberg’s plume moss association, (3) bent grass–red fescue association, and (4) poverty grass–mouse-eared hawkweed association. All four plant associations were distributed in space according to the physiography and nature of the soils. Vegetation was highly influenced by age of sites. Young meadows and pastures were dominanted by timothy, red top, white clover and Canada bluegrass. Red fescue was very important on all 10 yr-old sites and remained so in all successional stages except in bent grass–red fescue and poverty grass–mouse-eared hawkweed associations. Vegetation changes with age depended on both ecological factors and land utilization. The results suggest that intensive soil studies and a rapid survey of vegetation would have provided results very similar to those obtained by a very detailed ecological study.

scholarly journals Amphibia, Anura, Strabomantidae, Pristimantis palmeri Boulenger, 1912: distribution extension for the Central Cordillera, Colombia

Check List ◽  
2011 ◽  
Vol 7 (1) ◽  
pp. 009
Author(s):  
Wilmar Bolívar-G. ◽  
Alan Giraldo ◽  
Javier Mendez
Keyword(s):  
Geographical Distribution ◽  
Endemic Species ◽  
Western Slope ◽  
Locality Record ◽  
Discontinuous Distribution ◽  
Valle Del Cauca ◽  
Central Cordillera

We report a new locality record for Pristimantis palmeri, an endemic species to Colombia associated to forest and weeds in open areas of Choco, Risaralda, Quindío, Valle del Cauca, and Cauca (900 – 2,400 m.a.s.l.). This report expands its geographical distribution in 177 km toward south and suggests the existence of a discontinuous distribution in the western slope of the Central Cordillera of Colombia.

scholarly journals Ramondo-Ostryetum carpinifoliae – a new association from the hop-hornbeam forests of the Sharri Mountains, Kosovo

Hacquetia ◽  
2019 ◽  
Vol 18 (2) ◽  
pp. 323-336
Author(s):  
Naim Berisha ◽  
Fadil Millaku ◽  
Bekim Gashi ◽  
Vlado Matevski
Keyword(s):  
Plant Community ◽  
Plant Communities ◽  
Plant Association ◽  
Limestone Habitat ◽  
Plant Associations ◽  
New Association ◽  
Ostrya Carpinifolia ◽  
Ramonda Myconi

Abstract In Europe, the genus Ramonda is represented with three species: Ramonda nathaliae, Ramonda serbica and Ramonda myconi. The first two are endemic Balkan species that are distributed also in Kosovo. These species grow in limestone as well as serpentine substrates, forming chasmophytic vegetation. The species Ramonda nathaliae is found in Macedonia, Greece, Serbia and in two localities in Kosovo, in the Sharri Mountains (Luboten and Gotovushë). R. nathaliae forms the following plant associations in the serpentines of Macedonia: Asplenio­Ramondetum nathaliae and Scorzonero-Ramondetum nathaliae, and the Achilleo­Ramondetum nathaliae in limestone substrates. Ostrya carpinifolia is charateristic species in Querco pubescentis-Ostryetum carpinifoliae, Ostryo-Fagetum, Querco-Ostryetum carpinifoliae and Corylo colurnae-Ostryetum carpinifoliae. This paper presents plant communities of Ramonda nathaliae and Ostrya carpinifolia in a limestone habitat, where the proposed new plant association named Ramondo­Ostryetum carpinifoliae ass. nova. is described. This plant community belongs to the class Quercetea pubescentis, order Quercetalia pubescenti­petraeae and alliance Fraxino orni­Ostryion. It was found and described on the limestone substrate on Mt. Luboteni (at 960–982 m a.s.l.).

scholarly journals Plant associations for three sawfly species (Hymenoptera, Tenthredinidae) in the Pacific Northwest

2019 ◽  
Vol 74 ◽  
pp. 27-33
Author(s):  
Quinlyn Baine ◽  
Chris Looney
Keyword(s):  
Pacific Northwest ◽  
Plant Association ◽  
Plant Associations ◽  
The Pacific

Plant associations are newly recorded for three tenthredinid species in the Pacific Northwest. A single Monardis pulla D.R. Smith, 1969 emerged from a chamber inside a cynipid gall on Rosa nutkana C. Presl. (Rosaceae). This is the first plant association record for M. pulla. Two Aphilodyctium fidum (Cresson, 1880) emerged from a stem and cynipid gall of Rosa rugibinosa Linnaeus, 1758, respectively. Several Rhogogaster lateraria (Cresson, 1880) eggs were discovered on Castilleja sp., which has no previously recorded sawfly associations.

scholarly journals Chiroptera, mid-Calima River basin, Pacific slope of the Western Andes, Valle del Cauca, Colombia

Check List ◽  
2011 ◽  
Vol 7 (2) ◽  
pp. 166
Author(s):  
Carlos A. Saavedra-Rodríguez ◽  
Vladimir Rojas-Díaz
Keyword(s):  
River Basin ◽  
Elevational Gradient ◽  
Diversity Patterns ◽  
The Andes ◽  
The Pacific ◽  
Species Checklist ◽  
Biogeographical Regions ◽  
Pacific Slope ◽  
Valle Del Cauca ◽  
Bat Diversity

The Calima River Basin is part of the Chocó Biogeográfico Ecoregion in the Pacific Coast of Colombia. Here, we compile a bat species checklist recorded for the Basin and describe the bat diversity patterns found in the mid-Calima Basin (the gradient from 300 – 1,400 m a.s.l.). The checklist comprises 55 bat species for the Basin. In the mid-Calima, 31 bat species occur (permanently or seasonally). Our results show complementary diversity patterns of bat assemblages living below and above 1,000 m. We also identified an overlap zone between 800 – 1,200 m a.s.l. where at least three pairs of sister species coexists. The sampled area is located where the Chocó and the Andes biogeographical regions are connected. The Calima River Basin has high bat richness, high variation in species composition along the elevational gradient, and harbours threatened and endemic species, highlighting its importance for conservation. 

scholarly journals Association distribution characteristics of natural and artificial Larix gmelinii forests along environmental gradients in northeast China

2019 ◽  
Author(s):  
Xiaohang Bai ◽  
Jinghua Yu ◽  
Shusheng Yuan ◽  
Yihong Tan
Keyword(s):  
Species Diversity ◽  
Northeast China ◽  
Larix Gmelinii ◽  
Annual Precipitation ◽  
Environmental Drivers ◽  
Slope Aspect ◽  
Scientific Management ◽  
Plant Association ◽  
Natural Forests ◽  
Plant Associations

Abstract Background: Larix gmelinii forest is one of coniferous forests in cold-temperate zone, which is a vital part of national strategic landscape of ecological security of China. Plant association distribution is different in natural and artificial Larix gmelinii forests, meanwhile, determining mechanisms in typical associations of Larix gmelinii forests still need to be explored. The study focused on which environmental factors actuated association distribution of natural and artificial Larix gmelinii forests in northeast China. Two-way indicator species analysis (TWINSPAN) and canonical correspondence analysis (CCA) were used to classify plant associations and explored the relationship between species and environment. Results: All the plots (n=175, size=30 m×30 m) of Larix gmelinii forests were classified into 6 plant associations by TWINSPAN. Species diversity in natural forests were higher than that in artificial forests. Ass.III and Ass.IV only appeared in natural forests, meanwhile, Ass.VI only appeared in artificial forests. The primary environmental drivers of species diversity patterns in natural forests were annual mean temperature, followed by annual precipitation, elevation, slope aspect, and canopy density. However, elevation and annual precipitation had strong effects in determining association distribution in artificial forests. Conclusions: Plant association distribution showed habitat preferences, besides, natural forests had higher species diversity and more resistance than artificial forests. The study can be used as a reference for Larix gmelinii forest ecosystem protection in northeast China and a theoretical basis for scientific management in similar areas.

scholarly journals Prunetum tenellae Soó 1951 Vincetosum herbaceae Pînzaru subass. nova (Prunion fruticosae R. Tx. 1952) in the cliff vegetation of the Republic of Moldova

2021 ◽  
Vol 13 (1(22)) ◽  
pp. 21-33
Author(s):  
Pavel Pinzaru ◽  
Keyword(s):  
Biodiversity Conservation ◽  
River Basin ◽  
Central European ◽  
Republic Of Moldova ◽  
Plant Associations ◽  
Cliff Vegetation ◽  
The Republic

This article presents the characterization of the phytocoenoses dominated by Amygdalus nana that occur in the cliff area of the Dniester river basin, Republic of Moldova, which have been grouped in a new sub-association – vincetosum hederaceae Pînzaru subass. nova, in the association Prunetum tenellae Soó 1951. This sub-association includes xerophilous, thermophilic, western-Pontic phytocoenoses, occurring on sandy clays or on rendzina soils, on the limestone hills of the Dniester river basin, at altitudes of 60-150 m. The fl oristic composition of these phytocoenoses is dominated by the Eurasian elements (50%), followed by the European (10%), the Pontic-Mediterranean (9,6%) and the Central European elements (5,2%). The subassociation Prunetum tenellae Soó 1951 vincetosum herbaceae Pînzaru is of high value in terms of biodiversity conservation and deserves to be included in the List of Protected Plant Associations of the Republic of Moldova

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