The dynamic matrix predicts population response to long-term experimental forest fragmentation
Data files
Sep 01, 2023 version files 22.58 KB
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Amphipod_yr_3-29_by_year.csv
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Amphipod_yr_3-29_three_time_blocks.csv
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README.md
Abstract
README: Site: 1-188 (pitfall traps are located at sites, unit at which samples are taken)
"Amphipod yr 3-29 by year.csv" all data by year
#rep: 1-6 (spatial random effect: replicates of the experiment)
#size: 1=small, 2=medium, 3=large, 4=control, NA=matrix (fragment size)
#edge: 1=core, 2=edge, 3=control, NA=matrix (proximity to fragment edge)
#topo: 1=slope, 2=drain (topography which determines vegetation communities)
#treat: 1=frag, 2=control, 3=matrix (the experimental treatment fragmentation)
#patch: 1-30 (spatial random effect: fragment/patch-level)
BeforeFrag_abun: Amphipod abundance before fragmenation (abundances summed for first two years of the experiment before the treatment was applied)
LnBefFrag+1: Ln(amphipod abundance +1) before fragmenation
#yr3 amphipod abundance in year 3
#yr4 amphipod abundance in year 4
#yr5 amphipod abundance in year 5
#yr6 amphipod abundance in year 6
#yr7 amphipod abundance in year 7
#yr8 amphipod abundance in year 8
#yr9 amphipod abundance in year 9
#yr10 amphipod abundance in year 10
#yr11 amphipod abundance in year 11
#yr12 amphipod abundance in year 12
#yr13 amphipod abundance in year 13
#yr14 amphipod abundance in year 14
#yr25 amphipod abundance in year 25
#yr26 amphipod abundance in year 26
#yr27 amphipod abundance in year 27
#yr28 amphipod abundance in year 28
#yr29 amphipod abundance in year 29
NA for "size" and "edge" means not applicable because there are no patch sizes or edge in the continuous forest control plots
NA for "BeforeFrag_abun" and "LnBef" not applicable because there was no matrix before fragmentation so no data were collected
"Amphipod yr 3-29 three time blocks.csv" as analysed in the paper
Site: 1-188 (pitfall traps are located at sites, unit at which samples are taken)
#rep: 1-6 (spatial random effect: replicates of the experiment)
#size: 1=small, 2=medium, 3=large, 4=control, NA=matrix (fragment size)
#edge: 1=core, 2=edge, 3=control, NA=matrix (proximity to fragment edge)
#topo: 1=slope, 2=drain (topography which determines vegetation communities)
#treat: 1=frag, 2=control, 3=matrix (the experimental treatment fragmentation)
#patch: 1-30 (spatial random effect: fragment/patch-level)
BeforeFrag_abun: Amphipod abundance before fragmenation (abundances summed for first two years of the experiment before the treatment was applied)
LnBefFrag+1: Ln(amphipod abundance +1) before fragmenation
Yr3-7_sum: Amphipod abundance summed for years 3-7 of the experiment
Yr10-14_sum: Amphipod abundance summed for years 10-14 of the experiment
Yr25-29_sum: Amphipod abundance summed for years 5-29 of the experiment
NA for "size" and "edge" means not applicable because there are no patch sizes or edge in the continuous forest control plots
NA for "BeforeFrag_abun" and "LnBefFrag+1" not applicable because there was no matrix before fragmentation so no data were collected
Methods
Invertebrates were sampled four times per year from 1985 to 1998, once during each season, November (spring), February (summer), May (autumn), and June (winter), and three times per year from 2009 to 2014 (each season excluding winter). Pitfall traps were opened for seven days during each sampling period. Traps were 8.5 cm diameter, 475 ml plastic cups filled with a 150 ml solution of 75% ethanol (95%), and 25% glycol. Samples for the two traps at each monitoring site were pooled. Amphipods were identified and counted in the laboratory.