کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8846499 1617683 2018 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Are species photosynthetic characteristics good predictors of seedling post-hurricane demographic patterns and species spatiotemporal distribution in a hurricane impacted wet montane forest?
ترجمه فارسی عنوان
آیا ویژگی های فتوسنتزی گونه ها پیش بینی خوبی از گیاهچه های جمعیت شناختی پس از طوفان و توزیع فصیحانه ای گونه در توفان های جنگل مونتان مرطوب است؟
کلمات کلیدی
منحنی پاسخ عکس سنتتیک، پویایی نهال، جنگل های استوایی، نرخ رشد، تبادل گاز، پارتیشن بندی بازگشتی مبتنی بر مدل،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
In situ measurements of leaf level photosynthetic response to light were collected from seedlings of ten tree species from a tropical montane wet forest, the John Crow Mountains, Jamaica. A model-based recursive partitioning ('mob') algorithm was then used to identify species associations based on their fitted photosynthetic response curves. Leaf area dark respiration (RD) and light saturated maximum photosynthetic (Amax) rates were also used as 'mob' partitioning variables, to identify species associations based on seedling demographic patterns (from June 2007 to May 2010) following a hurricane (Aug. 2007) and the spatiotemporal distribution patterns of stems in 2006 and 2012. RD and Amax rates ranged from 1.14 to 2.02 μmol (CO2) m−2s−1 and 2.97-5.87 μmol (CO2) m−2s−1, respectively, placing the ten species in the range of intermediate shade tolerance. Several parsimonious species 'mob' groups were formed based on 1) interspecific differences among species response curves, 2) variations in post-hurricane seedling demographic trends and 3) RD rates and species spatiotemporal distribution patterns at aspects that are more or less exposed to hurricanes. The composition of parsimonious groupings based on photosynthetic curves was not concordant with the groups based on demographic trends but was partially concordant with the RD - species spatiotemporal distribution groups. Our results indicated that the influence of photosynthetic characteristics on demographic traits and species distributions was not straightforward. Rather, there was a complex pattern of interaction between ecophysiological and demographic traits, which determined species successional status, post-hurricane response and ultimately, species distribution at our study site.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Oecologica - Volume 89, May 2018, Pages 1-10
نویسندگان
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