High alpha and beta diversity and possible sampling artifacts necessitate extensive sampling to reveal differentiation in these fungal communities. Soils harbored a unique mycoflora that did not reveal vegetative boundaries or site differences. Fungal communities had higher alpha and beta diversity than plant communities fungal communities were approximately 20 times as rich as plant communities and the majority of OTUs were found in single soil samples. We also sampled plant communities at the same sites to offer a point of comparison for patterns in richness of fungal communities. all OTUs but one belonged to the subphylum Agaricomycotina. 17% were Leotiomycet.es, 16% were Dothideomycetes and the remaining OTUs were distributed among the classes Eurotiomycetes, Pezizomycetes, Lecanoromycetes, Orbiliomycetes and Arthoniomycetes. from headwaters to the estuary, with the ecotone being the river continuum (in. We combined information from partial LSU and ITS sequences and found that the majority of OTUs belonged to the phylum Ascomycota, followed by Basidiomycota. An ecotone is a zone of transition between adjacent ecological systems. using clone libraries of fungal ribosomal DNA, we identified 280 operational taxonomic units (OTUs) from a total 40 g soil. USA- We pooled soil samples across 29 m transects on either side of the ecotone at each of the two sites, and. We are currently conducting a transplant experiment to elucidate mechanisms behind these community shifts and predict some of their ecological consequences.We investigated the community composition and diversity of soil fungi along a sharp vegetative ecotone between coastal sage scrub (CSS) and nonnative annual grassland habitat at two sites in coastal California. interactions likely vary along the forest-ecotone-marsh continuum. Our data suggest that the colonization of marshes by mangroves causes deterministic changes in local arthropod communities. These gradients, or ecotones, are dynamic: their location and extent are seemingly. Such spatial variation in herbivory may prove important for understanding mangrove range expansion. Differences in diversity and community structure between ecotone and non-ecotone patches were driven primarily by taxonomic groups comprised of herbivores (Hemiptera, Orthoptera), implying that plant-herbivore interactions likely vary along the forest-ecotone-marsh continuum. beyond the ecotone for both mangroves and marsh plants, though the difference was subtle for mangroves and pronounced for marsh patches. However, arthropod community structure significantly differed between patches inside vs. alterniflora), while diversity did not differ between mangrove trees in the ecotone vs. Arthropod diversity was greater in patches of marsh plants located in ecotone landscapes compared to patches in northern “mangrove-free” marshes (both B. This was primarily due to a high abundance of psyllids (Hemiptera: Sternorrhyncha) on mangroves and their rarity in marsh patches. During both months we collected ten community samples per patch type at each site and identified specimens to order or suborder.Īrthropod communities on black mangrove trees were very different from those present in marsh plant patches, regardless of habitat type (ecotone or not). Home Range A home range is an area in which an animal lives and moves on a daily or periodic basis (a little bigger than habitat home office home). Habitat surroundings in which an organism lives (home). Three sites were located inside the ecotone and four bordered the ecotone (2 north, 2 south). Ecotone zone of transition between two ecosystems. In May and July 2014 we sampled arthropods from patches of black mangroves ( Avicennia germinans), the marsh plant Batis maritima and the marsh plant Spartina alterniflora at 7 sites spanning 350km. In the present study, we quantified the composition of terrestrial arthropod communities along the mangrove-marsh ecotone on the Atlantic coast of Florida, USA. Studying ecological patterns along these ecotones is of interest because 1) they are well suited for asking questions regarding range-expansions, habitat heterogeneity and climate change and 2) mangroves and salt marshes provide critical ecosystem services and support diverse animal communities. In areas such as the Southeastern United States, mangrove-marsh ecotones are changing as mangroves expand their ranges poleward due to milder winters. These gradients, or ecotones, are dynamic: their location and extent are seemingly impacted by climate trends, extreme weather events, and biotic interactions. Along many coastlines worldwide, the boundary between tropical and temperate areas is marked by a habitat gradient between mangrove forests (tropical) and salt marshes (temperate).
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