Biologists have considered both winter coldness and temperature seasonality as major determinants of the northern limits plants animals in Northern Hemisphere, which turn drive well-known latitudinal diversity gradient. However, few studies tested two climate variables is primary determinant. In this study, we assess whether or more strongly associated with tree species richness North America. ...

A weed population survey was carried out to assess the variability in species composition and abundance main coffee production systems regions of Ethiopia. total 168 fields were assessed using a quadrat count systematic sampling technique. Weed evaluated frequency, dominance at each site. We found 98 taxa belonging 35 families, which Asteraceae Poaceae most abundant. The frequent Oplismenus hir...

A survey and exploratory study were conducted to analyze Lake Tempe as a resource for contextual learning (CTL). The first phase of the included exploring lake’s potential through interviews with people who live in coastal region. Quadrat transects done identify aquatic plants around lake. feasibility analysis was see resource. Field data collected compared environmental biology (EB) curriculum...

Grasslands are one of the largest carbon sinks and crucial in cycle. However, modelling each species' versus cover relationship is complex, ground flora covers plant functional types simplify model development provide a helpful link between physiologic strategies ecosystem processes. The present experiment randomly selected 115 quadrats 1×1 meters from Banaras Hindu University campus. herbaceou...

Abstract Critical support for successful coffee-based agroforestry production is the amount of litter input and activity macro-organisms. The purpose this study was to analyze relationship between on soil surface, population earthworms, growth coffee. research conducted June 2019 March 2020 at Universitas Brawijaya Forest, East Java, Indonesia. For coffee plants, a proportional random sampling ...

Since 2016 we have studied the largest interdunal wetlands/slack lying within a deflated parabolic dune east of Lake Michigan. Geologic cross-sections show ? 15 m sand and gravel beneath dunes , creating an aquifer hydraulically connecting Michigan-Huron (MH) with water table/shallow groundwater influencing slack. levels risen 1 from to 2020, increasing around slack m. Color-infrared images veg...

Abstract Phytomanagement techniques using native species allow the recovery of contaminated soils at low cost and circumvent ecological risks associated with use non-native species. In this context, a paradigmatic brownfield megasite highly by As Pb was sampled in order to analyze soil–plant interactions identify plant phytoremediation potential. A survey first carried out 20-ha area obtain an ...

We examined changes in plant species composition at * avilie Fraine in southeastern Wisconsin, based on surveys in permanently-marked, 2 X 2 m quadrats in 19461948, 1976-1978 and 2005. Permanent quadrats were distributed across a wide soil moisture gradient. During settlement he site was never cultivated but was mowed for hay for several decades prior to 1946, and burned most years during the d...

Coastal areas and other saline environments are major contributors to regional and global biodiversity patterns. In these environments, rapidly changing gradients require highly specialized plants like halophytes. In European coastal cliff-tops, rocky and sandy seashores, and saltmarshes, typical halophytes from the genus Limonium are commonly found. Among them, the aneuploid tetraploid (2n = 4...

Subsampling techniques developed by Hartigan (for independent observations) and by Carlstein (for mixing processes on the integers) are extended to estimate variances and covariances of statistics of spatial processes. If the process is stationary, and dependence weakens rapidly with increasing distance, then the procedure is consistent in the sense that, as the region available for observation...