Table
3A: Column descriptions for Links data sheet |
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Column Number |
Column Name |
Column Description |
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1 |
Consumer Node ID |
The unordered nominal node
specific ID number of the consumer in the interaction. |
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2 |
Resource Node ID |
The unordered nominal node
specific ID number of the resource in the interaction. |
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3 |
Consumer Species ID |
The unordered nominal specifies
ID number of the consumer in the interaction. |
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4 |
Resource Species ID |
The unordered nominal specifies
ID number of the resource in the interaction. |
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5 |
Consumer Stage ID |
The ordered stage sepecific ID
number of the consumer node. |
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6 |
Resource Stage ID |
The ordered stage sepecific ID
number of the resource node. |
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Consumer Species Stage ID |
The combined Species ID number
and Stage ID number of the consumer, separated by the decimal point. |
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Resource Species Stage ID |
The combined Species ID number
and Stage ID number of the resource, separated by the decimal point. |
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7 |
Link Type ID |
The unordered nominal numeric
indication of the specific type of trophic interaction occurring and
corresponding to the Link Type column. |
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8 |
Link Type |
The unordered nominal definition
of a trophic interaction corresponding to the Link Type ID column. Link types
are mutually exclusive. We use
the term ÔsymbiontÕ after De Bary (1879), to refer to all mutuals, commensals
and parasites for which a larger organism serves as the host to an intimate
and durable interaction. We use 'hostÕ to refer to the resource individual
for all trophic interactions where the consumer is a symbiont and by
convention a micropredator. We use ÔpreyÕ to designate resource individuals
when the consumer is not a symbiont or a micropredator. Not all links are trophic (e.g.
commensal) and care must be taken to exclude these from analyses of food web
structure. |
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9 |
Link Evidence |
A qualitative description of the
evidence or rationale for including the trophic link in the web. |
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10 |
Link Evidence Notes |
A qualitative description of the
link evidence source. |
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11 |
Link Frequency |
For observed links, the
proportion of times that the link was observed (e.g., the proportion of
consumer guts within which the resource species was present). |
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12 |
Link N |
The number of consumers that
were examined to detect this particular link. |
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13 |
Diet Fraction |
The fraction of the consumer's
diet (e.g., in terms of biomass/year) comprised by the resource node. |
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14 |
Consumption Rate |
The rate at which the
interaction occurs, explicitly expressed in numbers, biomass or energy per
unit time. |
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15 |
Vector From |
The Node ID of the vector
necessary for a parasitic feeding link to occur. For instance, enter the Node ID for
mosquito here if the link is malaria-human. If more than one vector can lead
to this type of parasitism, there will be multiple rows repeated here, one
for each prey type. Note, in many
cases, this will lead to duplicate links, which may need to be considered in
analyses. |
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16 |
Prey From |
The Node ID of prey needed to be
consumed for a particular parasite-prey interaction to occur (via trophic
transmission). If more than one
prey can lead to parasitism, there will be multiple rows repeated here, one
for each prey type. Note, in many
cases, this will lead to duplicate links, which may need to be considered in
analyses. |
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