Determination of an appropriate quadrat size and shape for detecting association between plant species

2011 ◽  
Vol 222 (10) ◽  
pp. 1790-1792 ◽  
Author(s):  
Mohammad Mousaei Sanjerehei
Keyword(s):  
Plant Species ◽  
Quadrat Size ◽  
Size And Shape

scholarly journals Short-term study on the yak dung seed bank on the Qinghai-Tibetan Plateau: effects of grazing season, seed characteristics and forage preferences

2021 ◽  
Author(s):  
Shulin Wang ◽  
Fujiang Hou
Keyword(s):  
Tibetan Plateau ◽  
Plant Species ◽  
Seed Bank ◽  
Seedling Density ◽  
Seed Shape ◽  
Grazing Season ◽  
Size And Shape ◽  
Foraging Preferences ◽  
Seed Characteristics ◽  
Yak Dung

Abstract Aims Viable seeds in herbivore dung constitute the dung seed bank, and the contribution of livestock dung to this seed bank in grazing pastures is often overlooked. Grazing season (warm and cold), seed characteristics (size and shape), and forage preference are the main factors that affect the size and composition of the dung seed bank and ultimately affect grassland ecology. However, how these three factors interact is unclear. Methods We collected yak dung as well as seeds of the common plant species from warm- and cold-season alpine meadows in northeastern Qinghai-Tibetan Plateau, and explored how grazing season (warm and cold), seed characteristics (size and shape) and foraging preferences (temporary cages method) affects yak dung seedling density, richness and diversity in an alpine pasture. Results Forty-three plant species (mainly perennials) germinated from yak dung. Dung seedling density, richness, and diversity did not differ significantly between the two grazing seasons. Small to medium-sized spherical seeds (seed size < 10 mg, shape index < 0.5) had the greatest germination potential. Conclusions Yaks vary their forage preference depending on the season (phenological period), and endozoochory occurs throughout both grazing seasons. Seed shape and size directly regulate the dung seedling density, richness, and diversity. Dung seedlings increase the heterogeneity of the aboveground vegetation near the microsites of the dung pieces and therefore promote grassland patching. Our study demonstrates that grazing season, seed characteristics, and yak forage preferences affect the dung seed bank in grazing ecosystems.

scholarly journals On the flora of honey plants of the Northern and Northwestern Altai regions within the Altai Territory

2019 ◽  
Vol 16 ◽  
pp. 00013
Author(s):  
Tatyana Kopytina ◽  
Galina Nenasheva ◽  
Marya Ivanova
Keyword(s):  
Plant Species ◽  
Botanical Composition ◽  
Floristic Richness ◽  
Maximum Content ◽  
North Western

The revision of honey plants in the regions’ floras and nature objects is regularly made for estimation of melliferous capacity of the territory. The article is devoted to the investigation of the melliferous flora of Northern and North-Western Altai in the area of Altai Territory. The goal of the research was to reveal the botanical composition of authentic honeys. The representativeness of melliferous species among common floristic richness in the studied districts is the following: in Altaiskiy − 56.49 %, Smolenskiy − 60.17 %, Soloneshenskiy − 53.61 %, Charyshskiy − 44.57 %. The examples of the botanical content of samples typical for each of these districts have been shown. In the angelica (djagilevyj) honey from Altajskiy district the maximum content of pollen belongs to the representatives from Apiaceae family 78.86 %. For the angelica (djagilevyj) honeys from surveyed districts the high content of pollen from the families Asteracerae, Brassicaceae, Fabaceae, Rosaceae are typical with different percentage in the samples. The article provides information on examples of wild-growing plant species including relicts, potential melliferous which pollen can be used as “marker” for determination of honey as Altai-origin.

scholarly journals INDENTIFKASI JENIS TUMBUHAN DI LOKASI PERTAMBANGAN NIKEL PT. CMMI (CAHAYA MODERN METAL INDUSTRI) KABUPATEN KONAWE SULAWESI TENGGARA

2019 ◽  
Vol 5 (2) ◽  
Author(s):  
Indrawati Indrawati ◽  
Sri Ambardini ◽  
Harmonika Nyiliantri
Keyword(s):  
Plant Species ◽  
Light Metal ◽  
Metal Industry ◽  
Nickel Mining

ABSTRAKTujuan penelitian ini untuk mengetahui jenis-jenis tumbuhan yang tumbuh di lokasi pertambangan nikel PT. CMMI (Cahaya Modern Metal Industri) Kabupaten Konawe, Sulawesi Tenggara. Prosedur penelitian dimulai dengan penetapan lokasi penelitian, kemudian dilanjutkan koleksi tumbuhan dan identifikasi jenis-jenis tumbuhan. Penelitian dilakukan dengan metode jelajah pada 3 stasiun pengamatan (stasiun I, stasiun II dan stasiun III). Hasil penelitian teridentifikasi 51 jenis tumbuhan yang tergolong dalam divisi Spermatophyta dan Pteridophyta. Divisi Spermatophyta terdistribusi dalam kelas Dicotyledoneae sebanyak 15 suku, kelas Monocotyledoneae sebanyak 2 suku, Divisi Pteridophyta terdistribusi dalam kelas Pteridopsida sebanyak 2 suku, yaitu Polypodiaceae dan Schizaeaceae. Stasiun I ditemukan sebanyak 40 jenis, stasiun II ditemukan sebanyak 15 jenis dan stasiun III ditemukan sebanyak 32 jenis. Kata Kunci : Identifikasi, Tumbuhan,Tambang nikel, PT. CMMI ABSTRACTThe purpose of this research was to find out the species of plants that grow in the nickel mining location of PT CMMI (Modern Light Metal industry) Konawe district, Southeast Sulawesi. Study Procedure begins with the determination of the area of research, collections of plants dan identification of plant species. Results of the study identified 51 species of plants that are classified indivisins Spermatophyta and Pteridophyta. The Divisio Spermatophyta distributed  class Dicotyledoneae 15 family and the class Monocotyledoneae 2 family. The Divisin Pteridophyta distributed in class Pteridopsida as much as 2 family, Schizaeaceae and Polypodiaceae. The station I found as much as 40 species, station II found as much as 15 species and station III found as much as 32 species.Keyword : Identification, Plant, Nickel mine , PT. CMMI

scholarly journals Size and Shape Determination of Riprap and Large-sized Aggregates Using Field Imaging

2020 ◽  
Author(s):  
Haohang Huang ◽  
◽  
Jiayi Luo ◽  
Erol Tutumluer ◽  
John Hart ◽  
...  
Keyword(s):  
Size And Shape ◽  
Shape Determination ◽  
Field Imaging

CT-Based Size and Shape Determination of the Craniofacial Skeleton: A New Scoring System to Assess Bony Deformities in Hemifacial Microsomia

2001 ◽  
Vol 12 (1) ◽  
pp. 87-94 ◽  
Author(s):  
Clara E. Huisinga-Fischer ◽  
Frans W. Zonneveld ◽  
J. Michiel Vaandrager ◽  
Birte Prahl-Andersen ◽  
Barry L. Eppley
Keyword(s):  
Scoring System ◽  
Hemifacial Microsomia ◽  
Craniofacial Skeleton ◽  
Size And Shape ◽  
Shape Determination ◽  
New Scoring

scholarly journals Quantitative Determination of Size and Shape of Surface-Bound DNA Using an Acoustic Wave Sensor

2008 ◽  
Vol 94 (7) ◽  
pp. 2706-2715 ◽  
Author(s):  
Achilleas Tsortos ◽  
George Papadakis ◽  
Konstantinos Mitsakakis ◽  
Kathryn A. Melzak ◽  
Electra Gizeli
Keyword(s):  
Acoustic Wave ◽  
Quantitative Determination ◽  
Size And Shape ◽  
Acoustic Wave Sensor
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