Data from: Evaluating the sensitivity of process domains for logjams to spatial and temporal sample size in river networks of the Southern Rockies, USA

Modification of river corridors, particularly deforestation and the
removal of large wood, has greatly altered the abundance and influences of
large wood on most rivers in the temperate latitudes. The conceptual
framework of large wood process domains can assist in both directing
research and facilitating large wood-related management and restoration in
rivers. Large wood process domains are spatially or temporally distinct
portions of a river network or region with distinct processes of wood
recruitment, transport, and storage. Previous research has shown wood to
be unevenly distributed across space and time. We use a dataset of logjam
distribution density in 304 spatially distinct reaches of mountain streams
in the Colorado Front Range, and up to 11 years of repeat measurements at
some reaches, to (i) statistically evaluate whether a priori designated
process domains for logjam distribution density are distinctly different
and (ii) evaluate the sensitivity of process domain delineations to
spatial and temporal sample size. Our results indicate that the major
spatial controls on logjam process domains for logjam distribution density
in the Southern Rockies are drainage area, reach morphology, and wildfire
disturbance history. Greater logjam distribution densities were present in
wide reaches and undisturbed catchments. Using subsets of the dataset
composed of under 100 reaches created similar results. The relationship
between geomorphic and hydrologic characteristics and their ability to
describe logjam distribution density was minimally affected when using
only a single year of data.