Add to ORKGThe physical factors within the transition zone between the typical prairie association of the state and the deciduous forest communities occurring along the Des Moines River have been studied. The conditions for plant growth at the source of the river in northwestern Iowa have also been compared with those near the mouth of the river in southeastern Iowa. The purpose of this paper is to report the effect of the modification of factors on the distribution and grouping of woodland species and on the general reactions of the communities to the varying habitat factors
A study of the primeval forest cover was made of three Iowa counties, Allamakee, Jackson and Lee, th...
Data is presented on the distribution of species along the Upper Skunk River, the percent of differe...
During the past two years a project on the ecology of Zea mays has been carried on in an attempt to ...
The physical factors within the transition zone between the typical prairie association of the state...
At the time of settlement Iowa was definitely a prairie state with less than 20 per cent of its area...
This virgin prairie area is mostly of the kame hill, saucer type. One portion of the territory is pr...
The tall grass prairie forms a belt across the United States from Canada to Mexico. This belt lies b...
During parts of the growing seasons of 1924 and 1925 a preliminary study has been made of two types ...
A cursory examination of the deciduous forest of eastern North America, at intervals from its center...
This study of the vegetation and habitat factors of a small area of prairie was begun June 25 and te...
In case of the annual, all structures die at the end of first season\u27s growth. In the biennial on...
This paper deals with the present forest lands in southern Iowa counties, giving their relations to ...
Twenty-four localities, or general habitat types, in southeastern Iowa and their associated plant co...
The data of ecology reveals a very close relationship between soil types and the species of plant wh...
A brief description of the topographic features of one of the bottom prairies compared with an adjac...
A study of the primeval forest cover was made of three Iowa counties, Allamakee, Jackson and Lee, th...
Data is presented on the distribution of species along the Upper Skunk River, the percent of differe...
During the past two years a project on the ecology of Zea mays has been carried on in an attempt to ...
The physical factors within the transition zone between the typical prairie association of the state...
At the time of settlement Iowa was definitely a prairie state with less than 20 per cent of its area...
This virgin prairie area is mostly of the kame hill, saucer type. One portion of the territory is pr...
The tall grass prairie forms a belt across the United States from Canada to Mexico. This belt lies b...
During parts of the growing seasons of 1924 and 1925 a preliminary study has been made of two types ...
A cursory examination of the deciduous forest of eastern North America, at intervals from its center...
This study of the vegetation and habitat factors of a small area of prairie was begun June 25 and te...
In case of the annual, all structures die at the end of first season\u27s growth. In the biennial on...
This paper deals with the present forest lands in southern Iowa counties, giving their relations to ...
Twenty-four localities, or general habitat types, in southeastern Iowa and their associated plant co...
The data of ecology reveals a very close relationship between soil types and the species of plant wh...
A brief description of the topographic features of one of the bottom prairies compared with an adjac...
A study of the primeval forest cover was made of three Iowa counties, Allamakee, Jackson and Lee, th...
Data is presented on the distribution of species along the Upper Skunk River, the percent of differe...
During the past two years a project on the ecology of Zea mays has been carried on in an attempt to ...