EX-99 16.a

POWER OF ATTORNEY

I, the undersigned member of the Board of Trustees of Delaware Group Adviser Funds, hereby constitute and appoint David F. Connor, David P. O’Connor and Richard Salus, and each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity the Delaware Group Adviser Funds’ Registration Statement on Form N-14 with respect to the reorganization of Delaware Group Equity Funds IV’s Delaware Global Real Estate Securities Fund and Delaware Pooled Trust’s The Global Real Estate Securities Portfolio into Delaware Group Adviser Funds’ Delaware Global Real Estate Opportunities Fund and generally to do all such things in my name and on my behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933, as amended, the Investment Company Act of 1940, as amended, and all related requirements of the Securities and Exchange Commission.  I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this instrument as of this 23rd day of May, 2012.

/s/ Patrick P. Coyne                                                

Patrick P. Coyne

POWER OF ATTORNEY

I, the undersigned member of the Board of Trustees of Delaware Group Adviser Funds, hereby constitute and appoint David F. Connor, David P. O’Connor and Richard Salus, and each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity the Delaware Group Adviser Funds’ Registration Statement on Form N-14 with respect to the reorganization of Delaware Group Equity Funds IV’s Delaware Global Real Estate Securities Fund and Delaware Pooled Trust’s The Global Real Estate Securities Portfolio into Delaware Group Adviser Funds’ Delaware Global Real Estate Opportunities Fund and generally to do all such things in my name and on my behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933, as amended, the Investment Company Act of 1940, as amended, and all related requirements of the Securities and Exchange Commission.  I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this instrument as of this 23rd day of May, 2012.

/s/ Thomas L. Bennett                                                

Thomas L. Bennett

POWER OF ATTORNEY

I, the undersigned member of the Board of Trustees of Delaware Group Adviser Funds, hereby constitute and appoint David F. Connor, David P. O’Connor and Richard Salus, and each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity the Delaware Group Adviser Funds’ Registration Statement on Form N-14 with respect to the reorganization of Delaware Group Equity Funds IV’s Delaware Global Real Estate Securities Fund and Delaware Pooled Trust’s The Global Real Estate Securities Portfolio into Delaware Group Adviser Funds’ Delaware Global Real Estate Opportunities Fund and generally to do all such things in my name and on my behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933, as amended, the Investment Company Act of 1940, as amended, and all related requirements of the Securities and Exchange Commission.  I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this instrument as of this 23rd day of May, 2012.

/s/ John A. Fry                                                

John A. Fry

POWER OF ATTORNEY

I, the undersigned member of the Board of Trustees of Delaware Group Adviser Funds, hereby constitute and appoint David F. Connor, David P. O’Connor and Richard Salus, and each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity the Delaware Group Adviser Funds’ Registration Statement on Form N-14 with respect to the reorganization of Delaware Group Equity Funds IV’s Delaware Global Real Estate Securities Fund and Delaware Pooled Trust’s The Global Real Estate Securities Portfolio into Delaware Group Adviser Funds’ Delaware Global Real Estate Opportunities Fund and generally to do all such things in my name and on my behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933, as amended, the Investment Company Act of 1940, as amended, and all related requirements of the Securities and Exchange Commission.  I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this instrument as of this 23rd day of May, 2012.

/s/ Anthony D. Knerr                                                

Anthony D. Knerr

POWER OF ATTORNEY

I, the undersigned member of the Board of Trustees of Delaware Group Adviser Funds, hereby constitute and appoint David F. Connor, David P. O’Connor and Richard Salus, and each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity the Delaware Group Adviser Funds’ Registration Statement on Form N-14 with respect to the reorganization of Delaware Group Equity Funds IV’s Delaware Global Real Estate Securities Fund and Delaware Pooled Trust’s The Global Real Estate Securities Portfolio into Delaware Group Adviser Funds’ Delaware Global Real Estate Opportunities Fund and generally to do all such things in my name and on my behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933, as amended, the Investment Company Act of 1940, as amended, and all related requirements of the Securities and Exchange Commission.  I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this instrument as of this 23rd day of May, 2012.

/s/ Lucinda S. Landreth                                                

Lucinda S. Landreth

POWER OF ATTORNEY

I, the undersigned member of the Board of Trustees of Delaware Group Adviser Funds, hereby constitute and appoint David F. Connor, David P. O’Connor and Richard Salus, and each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity the Delaware Group Adviser Funds’ Registration Statement on Form N-14 with respect to the reorganization of Delaware Group Equity Funds IV’s Delaware Global Real Estate Securities Fund and Delaware Pooled Trust’s The Global Real Estate Securities Portfolio into Delaware Group Adviser Funds’ Delaware Global Real Estate Opportunities Fund and generally to do all such things in my name and on my behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933, as amended, the Investment Company Act of 1940, as amended, and all related requirements of the Securities and Exchange Commission.  I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this instrument as of this 23rd day of May, 2012.

/s/ Ann R. Leven                                                

Ann R. Leven

POWER OF ATTORNEY

I, the undersigned member of the Board of Trustees of Delaware Group Adviser Funds, hereby constitute and appoint David F. Connor, David P. O’Connor and Richard Salus, and each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity the Delaware Group Adviser Funds’ Registration Statement on Form N-14 with respect to the reorganization of Delaware Group Equity Funds IV’s Delaware Global Real Estate Securities Fund and Delaware Pooled Trust’s The Global Real Estate Securities Portfolio into Delaware Group Adviser Funds’ Delaware Global Real Estate Opportunities Fund and generally to do all such things in my name and on my behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933, as amended, the Investment Company Act of 1940, as amended, and all related requirements of the Securities and Exchange Commission.  I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this instrument as of this 23rd day of May, 2012.

/s/ Frances Sevilla-Sacasa                                                

Frances Sevilla-Sacasa

POWER OF ATTORNEY

I, the undersigned member of the Board of Trustees of Delaware Group Adviser Funds, hereby constitute and appoint David F. Connor, David P. O’Connor and Richard Salus, and each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity the Delaware Group Adviser Funds’ Registration Statement on Form N-14 with respect to the reorganization of Delaware Group Equity Funds IV’s Delaware Global Real Estate Securities Fund and Delaware Pooled Trust’s The Global Real Estate Securities Portfolio into Delaware Group Adviser Funds’ Delaware Global Real Estate Opportunities Fund and generally to do all such things in my name and on my behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933, as amended, the Investment Company Act of 1940, as amended, and all related requirements of the Securities and Exchange Commission.  I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this instrument as of this 23rd day of May, 2012.

/s/ Janet L. Yeomans                                                

Janet L. Yeomans

POWER OF ATTORNEY

I, the undersigned member of the Board of Trustees of Delaware Group Adviser Funds, hereby constitute and appoint David F. Connor, David P. O’Connor and Richard Salus, and each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity the Delaware Group Adviser Funds’ Registration Statement on Form N-14 with respect to the reorganization of Delaware Group Equity Funds IV’s Delaware Global Real Estate Securities Fund and Delaware Pooled Trust’s The Global Real Estate Securities Portfolio into Delaware Group Adviser Funds’ Delaware Global Real Estate Opportunities Fund and generally to do all such things in my name and on my behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933, as amended, the Investment Company Act of 1940, as amended, and all related requirements of the Securities and Exchange Commission.  I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this instrument as of this 23rd day of May, 2012.

/s/ J. Richard Zecher                                                

J. Richard Zecher

POWER OF ATTORNEY

I, the Chief Financial Officer of Delaware Group Adviser Funds, hereby constitute and appoint David F. Connor, Patrick P. Coyne and David P. O’Connor, and each of them singly, my true and lawful attorneys-in-fact, with full power of substitution, and with full power to each of them, to sign for me and in my name in the appropriate capacity the Delaware Group Adviser Funds’ Registration Statement on Form N-14 with respect to the reorganization of Delaware Group Equity Funds IV’s Delaware Global Real Estate Securities Fund and Delaware Pooled Trust’s The Global Real Estate Securities Portfolio into Delaware Group Adviser Funds’ Delaware Global Real Estate Opportunities Fund and generally to do all such things in my name and on my behalf in connection therewith as said attorneys-in-fact deem necessary or appropriate, to comply with the provisions of the Securities Act of 1933, as amended, the Investment Company Act of 1940, as amended, and all related requirements of the Securities and Exchange Commission.  I hereby ratify and confirm all that said attorneys-in-fact or their substitutes may do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned has executed this instrument as of this 23rd day of May, 2012.

/s/ Richard Salus                                                

Richard Salus