// This is a generic paginator for album, photo and movie pages. Depending on the page type,
// there are different sets of variables available. With this data, you can make a paginator
// that lets you say "You're viewing photo 5 of 35", or "You're viewing photos 10 - 18 of 37"
// for album views.
//
// Available variables for all page types:
// $page_type - "collection", "item", or "other"
// $page_subtype - "album", "movie", "photo", "tag", etc.
// $previous_page_url - the url to the previous page, if there is one
// $next_page_url - the url to the next page, if there is one
// $total - the total number of photos in this album
//
// Available for the "collection" page types:
// $page - what page number we're on
// $max_pages - the maximum page number
// $page_size - the page size
// $first_page_url - the url to the first page, or null if we're on the first page
// $last_page_url - the url to the last page, or null if we're on the last page
// $first_visible_position - the position number of the first visible photo on this page
// $last_visible_position - the position number of the last visible photo on this page
//
// Available for "item" page types:
// $position - the position number of this photo
//
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Railroad right-of-way, west of Sierra Blanca
Railroad right-of-way, 5 miles west of Sierra Blanca, where the plant soil correlation study station number 4 was located. The grassland to the right of the picture has been under fence for 30 years while the browse to the left of the picture has been open to livestock grazing. The vegetation inside the fence is composed of 20 percent Bouteloua gracilis, 15 percent Sporobolus airoides, 10 percent Hilaria mutica, 10 percent Andropogon hallii, 5 percent Serghum halepense, 5 percent Panicum obtusus and 8 percent Atriplex canescens. The average density is .65 and the forage acre factor is .27. Erosion is very slight and some deposition is apparent under vegetative cover. The vegetation outside the fence consists of 35 percent Sporobolus airoides, 20 percent Bouteloua gracilis, 10 percent Triodia pulchella, 5 percent Bouteloua eriopoda, 10 percent Flourensia ceruna and 5 percent Prosopis glandulosa. The average density is .30 and the forage acre factor is .12. Erosion is both moderate sheet and wind erosion with occasional gullies. The soil is a heavy type with a deep profile and a well developed, non-cemented lime zone. This area gives an excelent example of the change from grassland to browse cover caused by overgrazing. Original photo number 303.