{"@context":"http://iiif.io/api/presentation/2/context.json","@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/manifest.json","@type":"sc:Manifest","label":"The effect of patch dynamics and nutrient availability on the production of Zostera marina seeds within Shinnecock Bay, NY","metadata":[{"label":"dc.description.sponsorship","value":"This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree."},{"label":"dc.format","value":"Monograph"},{"label":"dc.format.medium","value":"Electronic Resource"},{"label":"dc.identifier.uri","value":"http://hdl.handle.net/11401/76190"},{"label":"dc.language.iso","value":"en_US"},{"label":"dc.publisher","value":"The Graduate School, Stony Brook University: Stony Brook, NY."},{"label":"dcterms.abstract","value":"Exposing Zostera marina to fertilized porewater has been shown to increase vegetative shoot density and leaf growth rates, as well as affect morphological shoot characteristics including increasing leaf length, leaf area and the number of leaves per shoot.  However, aside from changes in shoot density, records of morphological changes in reproductive shoots subjected to increased nutrient availability are lacking.  To address this, five replicate ambient and nutrient enriched patches, each between 0.5 and 2.0 m2, were selected within a developing Z. marina meadow in Shinnecock Bay, NY.  Fertilizer stakes, with a N:P:K of 15:3:3, were used to amend enriched patches in the late fall and early spring.  In June, measures of reproductive shoot height, number of rhipidia, number of spathes occupying each rhipidium, and number of developed ovaries on the youngest rhipidium were recorded.  Reproductive shoots allocated nutrients to significantly increase reproductive shoot height, the number of rhipidia, and the number of spathes on each rhipidium in response to fertilization.  Nutrient enrichment also significantly advanced the stage of ovary development in the first spathes at the time of sampling, indicating that the rate of development had been accelerated or the reproductive shoot was capable of flowering earlier.  Additionally, the number of ovaries developing into viable seeds, determined by the size of the seed embryo, was significantly greater in reproductive shoots growing in enriched  porewater.  Morphological changes following nutrient addition likely increase pollen access by elevating receptive stigma above the canopy and increase seed output per reproductive shoot.  Combined, these morphological changes of the reproductive shoots in areas of greater porewater nutrients could hasten patch expansion through hot spots of reproductive success.   With increasing seagrass fragmentation worldwide, understanding the effect of patch dynamics on seagrass reproduction within the seagrass landscape is vital.  Patches of Zostera marina varying between 2.5m2 and 20m2 were completely cleared of reproductive shoots in 2011 and 2012 and separated into edge (< 1m from the patch edge) and core (> 1m from the edge) material.  Shoots were kept in seawater tables until seeds dehisced naturally from the plant.  Normal seeds, consisting of a firm seed coat filled by the seed embryo, were then enumerated for each patch to quantify the impact of the seascape on seed production.  Patch size had no significant effect on the density of normal or nonviable seeds.  Location within the patch did have a significant effect on normal seed density in 2012 when reproductive shoot density was controlled for as a covariate.  Normal seed density was then found to be significantly greater in younger edge habitat than older, less sexually productive core habitat.  Z. marina age seems to have a impact on the amount of seeds produced in an area."},{"label":"dcterms.available","value":"2017-09-20T16:49:37Z"},{"label":"dcterms.contributor","value":"Peterson, Bradley J"},{"label":"dcterms.creator","value":"Jackson, Lisa"},{"label":"dcterms.dateAccepted","value":"2017-09-20T16:49:37Z"},{"label":"dcterms.dateSubmitted","value":"2017-09-20T16:49:37Z"},{"label":"dcterms.description","value":"Department of Marine and Atmospheric Science."},{"label":"dcterms.extent","value":"51 pg."},{"label":"dcterms.format","value":"Application/PDF"},{"label":"dcterms.identifier","value":"http://hdl.handle.net/11401/76190"},{"label":"dcterms.issued","value":"2014-12-01"},{"label":"dcterms.language","value":"en_US"},{"label":"dcterms.provenance","value":"Made available in DSpace on 2017-09-20T16:49:37Z (GMT). No. of bitstreams: 1\nJackson_grad.sunysb_0771M_12010.pdf: 14582008 bytes, checksum: 658b7940fc3395dc99339fdd0f10c11c (MD5)\n  Previous issue date:    1"},{"label":"dcterms.publisher","value":"The Graduate School, Stony Brook University: Stony Brook, NY."},{"label":"dcterms.subject","value":"eelgrass, fertilize, flower, reproduction, seed"},{"label":"dcterms.title","value":"The effect of patch dynamics and nutrient availability on the production of Zostera marina seeds within Shinnecock Bay, NY"},{"label":"dcterms.type","value":"Thesis"},{"label":"dc.type","value":"Thesis"}],"description":"This manifest was generated dynamically","viewingDirection":"left-to-right","sequences":[{"@type":"sc:Sequence","canvases":[{"@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/canvas/page-1.json","@type":"sc:Canvas","label":"Page 1","height":1650,"width":1275,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/44%2F52%2F20%2F44522023283860348454302535150999200724/full/full/0/default.jpg","@type":"dctypes:Image","format":"image/jpeg","height":1650,"width":1275,"service":{"@context":"http://iiif.io/api/image/2/context.json","@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/44%2F52%2F20%2F44522023283860348454302535150999200724","profile":"http://iiif.io/api/image/2/level2.json"}},"on":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/canvas/page-1.json"}]}]}]}